Reagan Latin and Greek Roots and Affix List

 

A comprehensive list of roots, stems, prefixes, and suffixes to help students break down words for better understanding:

 

Root/Affix                       Definition                    Example

 

1.        a-, an-                       not, without                abyss

2.        ad‑                            to; toward                    advance

3.        agri/agro                  field                              agriculture

4.        ama/ami/amor          love, friend                  amorous,

                                                                                amiable

5.        ambi-                        both                              ambivalent

6.        andr/o                      man, male                     android

7.        ann/enn                   year                              annual

8.        ante‑                         before                           anteroom

9.        anthrop/o                man, human                 anthropology

10.     anti‑                          against                         anti‑nuke

11.     aqua                         water                            aquatic

12.     arch/archi                rule, first, chief            archenemy

13.     astro/aster/astr       star                               astronomy

14.     aud                           hear                              auditory

15.     auto‑                         self; alone                    automatic

16.     avi                             bird                               aviation

17.     bel(l)                         war                                bellicose

18.     bene‑                        good; well                   benefit

19.     bi‑/bin-                     two                               bifocal

20.     bibl/i/o                     book                             Bible

21.     bio                            life                                 biology

22.     caco-                        bad, ill                          cacophony

23.     capit                         head                             decapitate

24.     capt                          take, hold, seize          capture

25.     cardi/o                      heart                             cardiogram

26.     carn/carni                flesh, meat                   carnivore

27.     cata-                         down, completely,      catastrophe

                                          against,   intensive

28.     cede/ceed/cess       move, yield                  recede

29.     cent‑                         hundred                       century

30.     cephal/o                   head                             hydrocephalic

31.     chrom                       color                             monochromatic

32.     chron                        time                               chronological

33.     -cide, cis                  to kill; cut                    suicide,

                                                                                excision

34.     circum‑                     around                         circumference

35.     clar                            clear                              clarity

36.     cogn                         knowledge                   incognito

37.     con‑, com‑, cor-      with; together             companion

38.     contra‑/counter-     against                         counteract

39.     corp/o, corpor         body                             corporal

40.     cosmo                      universe, world           cosmopolitan

 41.     -cracy/crat               govern                         democracy

42.     cred                          believe                         incredible

43.     cycl/o                       circle, wheel                bicycle

44.     de‑                            from; down; away      descend

45.     dec‑                          ten                                decade

46.     dem                           people                          democracy

47.     derm                         skin                               dermatology

48.     di‑                             apart                             divorce

49.     dia-                           through; across          diaphanous

50.     dic/dict                     say, speak                   dictate

51.     dis‑                           not; apart                 disapprove

52.     duc, duct                 lead                           educate

53.     dyn/a, dynam/o      power, energy,        dynamic

                                          strength

54.     dys-                          bad, difficult            dysfunctional

      abnormal, impaired

55.     e‑, ex‑                        out of                       exonerate

56.     ecto-                         outside                     ectotherm

57.     ego                           self                            egotistical 

58.     en-, em-                    in                               energy

59.     endo-                        inside                       endocarditis

60.     epi-                           outside, over           epicanthus,

      among, after            epilogue

61.     equi‑                         equal                        equilateral

62.     erg/o                         work                         ergophobic

63.     eu-                            good, well                euphoria

64.     extra‑, extro-            outside,                    extravagant

      beyond, above      

65.     fac(t)/fec/fic         do, make                      manufacture

66.     -fer/-ferous              carry, produce        transfer     

67.     fid                             trust                          infidelity

68.     fin                             end                           final

69.     flu                             f low                         fluctuate

70.     frater                         brother                     fraternal

71.     fus                            pour                          profusion

72.     gen/gon                   birth; origin             genesis

73.     geo                           earth                         geography

74.     glott                          tongue                     glottal        

75.     gnos/gnom              knowledge               diagnosis

76.     graph/gram        write; record                 autograph

77.     greg                          flock                         congregation

78.     gress/grad/e        to step, to go              transgress

                                                                            degrade

79.     gyn                           woman; female        gynecology

80.     heli/o                        sun                           heliocentric

81.     hemi‑                        half                           hemisphere

82.     hemo/em                  blood                        hemophilia

83.     hetero                       different, other        heterogeneous

84.     hom/o                       man                           homicide

85.     homo/homeo           same, similar,           homonym

                                          equal

86.     hydr/o                      water                        hydrant

87.     hyper‑                      above; over             hyperactive

88.     hypo‑                       below                       hypodermic

89.     in‑, im‑, ir‑, il            not                            incorrect;

                                                                            irrational

90.     inter‑                         between; among     intertwine

91.     intra‑, intro-             within, inward         intramural

                                          into

92.     -itis -titis                  inflamation of          dermatitis

93.     ject                            throw; hurl              reject

94.     junct                         join                           conjunction

95.     kilo‑                          thousand                 kilowatt

96.     later                          side                           unilateral

97.     laud                          praise                       laudatory

98.     leg                             law                            legal

99.        lingu                           tongue; language linguistics

100.     lith                              stone                      monolith

101.     log/o/ology               study of; word      dialogue

                                              reason                    geology

102.     luc/lus/lumen            light                        translucent;

                                                                              illuminate

 

Root/Affix                       Definition                    Example

 

103.     lun/luni                      moon                      lunar

104.     macro-                        large, long             macroscopic

105.     magni‑                        large                       magnify

106.     mal‑                             bad                         maladjusted

107.     man/u/i                       hand                       manipulate

108.     mania                          excessive desire   kleptomania

109.     mar/e                          sea                          maritime

110.     mater/matr                 mother                    maternal

111.     meta-                          change; beyond   metamorphosis

112.     meter/metr                 measure                 thermometer

113.     micro‑                         very small              microscope

114.     mid‑/medi-                 middle; halfway    midterm

115.     mil(l)‑                          thousand               millennium

116.     mis‑                             wrong                     mistake

                                                                              misnomer

117.     mis-/miso-                  to hate                    misanthropic

118.     mit/miss                     send                       transmit

                                                                              missive

119.     mobile                        movable                 mobility

120.     mono‑                         one                         monogram

121.     morph/o                     form; shape           amorphous

122.     mort/mor                    death                      immortal

123.     multi‑                          many                      multitude

124.     mut                             change                   mutation

125.     nasc/nat                     birth; born             prenatal;

                                                                              nascent

126.     naut                            sailor; seaman       nautical

127.     nav                             ship; boat              navigation

128.     necr/o                         dead, death           necropolis

129.     neo‑                            new                         neophyte

130.     nomen/nom               name; noun           nomenclature

131.     non-                            not                          nonconformist

132.     nov                             new                         renovate

133.     nym/onym                 name; word           acronym

134.     omni-                          all                            omnipotent

135.     ortho                          straight, correct    orthodontics

136.     pac                              peace                      pacific

137.     pan‑                            all; every                pandemic

138.     para‑                           similar                     paraphrase

139.     pater/patri                  father                      paternal

140.     path/o/pathy             feeling; disease    empathetic;

141.     ped/i/-pede/pod       foot                         centipede

142.     pend                           hang                       suspend

143.     per‑                             through                  perforate

144.     peri-                            around, surround periscope

145.     phag                           to eat                      esophagus

                                                                              phagocyte

146.     phil/o/phile                love; affinity for   bibliophile

147.     -phobia                      fear                         agoraphobia

148.     phon/e                       sound                     telephone

149.     phor/e                        bear, produce        metaphor

                                              carry

150.     phos/phot                 light             phosphorescence

                                                                              photograph

151.     poly‑                           many                      polygon

152.     pon/pos                 place; put                  depose

153.     port                         carry                           transport

154.     post‑                       after                            postpone

155.     pot/poss                power                         potent

156.     pre‑                         before                         pre‑war

157.     pro‑                         for; forth                    pronoun;

                                                                              proceed

158.     pseud/o                 false                            pseudopod

159.     psych                     mind                           psychology

160.     pyro                        fire; heat; fever         pyromaniac

161.     quad‑                      four                             quadruplets

162.     re‑                           back; again                return

163.     retro-                      backward; behind    retroactive

164.     sci                           know                          prescient

165.     scop, -scope         view; examine           endoscope

166.     scrib/scrip             write                           scripture

167.     semi‑                       half                             semicircle

168.     sen                          old                              senile

169.     sent/sens               feel; think                  presentiment

170.     sol                           sun                             parasol

171.     soph                       wise                            philosopher

172.     soror                       sister                          sorority

173.     spec/t/spic            look at; examine        spectator

174.     spir/o                      breathe                       respiration

175.     sta/t/-stasis           stand; firm;                homeostasis

                                          stable, steady          

176.     struct                      build                           construct

177.     sub‑                        under                          subway

178.     super‑                     above; over               superintendent

179.     syn-, sym-, syl-     together, same          synthesis

180.     tele‑                        far                               telescope

181.     temp                       time                             temporary

182.     ten/tin/tain            hold                            tenacious

183.     terra                        earth; land                 terrain

184.     the/o                       God                             atheist

185.     therm/o                  heat                            thermometer

186.     tom/tome               to cut                          appendectomy

187.     tort                          turn; twist                  distortion

188.     tox                           poison                        toxemia

189.     tract                        draw; pull                  extract

190.     trans‑                      across                        transfer

191.     tri‑                           three                           triple

192.     un‑                          not                              unwise

193.     uni‑                         one                             unilateral

194.     ven                         come                           convene

195.     ver                          true                             verity

                                                                              verisimilitude

196.     vers/vert                to turn                        versatile

197.     vic/vinc                  conquer                     victory

198.     vid/vis                    see                              evident

199.     viv/i/vit/vi             life                               survive

200.     voc/vok                 call, voice                  vocal/provoke

201.     vol                          wish                            volunteer

202.     volv/volut             roll                              revolve

203.     vor                          devour; eat                voracious

204.     xen/o                      foreign                       xenophobic

205.     zo                            animal                         zoology

Thank you Beverly Baroski