100 roots in English vocabulary1. ag, act = to do, to driveAgent Agency Agenda Agile Agitate Act Action Active Actual ActuateExact React Interact Transact2. am,amat= to loveAmiable Amateur AmicableAmour Enamour3. anim=lifeAnimal Animate Unanimous Animation Animated 4. enn, ann=yearAnnual Anniversary Annals Perennial Semiannual Biannual Biennial5. anthrop= manAnthropology Anthropologist6. arch= ruleAnarchy Monarch MonarchyPolyarchy Archives Archenemy Architect7. aud, addit=to hearAudience Auditorium AudibleAudit Audition Auditory Audio8. aug, auct, auth=to increaseAugment August AuctionAuthor Auctorial AuthorityAuthorize Authoritative9. bi,bio=lifeBiology BiographyBiocide Antibiotic MicrobialBiochemistry Biophysics BiosphereBiotechnique Bioelectricity10. cad, cas, cid=to fall, to befallDecadent CaseCasual Occasion Accident IncidentCoincide Occident Decay Cascade11. cap, capt,ceive=to takeCapable Capacious Capture CaptiveReceive Deceive Conceive PerceiveExcept Incept Intercept PreceptSusceptible Anticipate Principal Participate Emancipate Self-deception Misconception Self-perception 12. ced, ceed, cess =to goProceed Procedure Process SucceedAccede Access Exceed PrecedeRecede Secede Concede13. centr= the middle pointCenter Central Decentralize Centric Concentrate Concentric Eccentric Centrifugal Centripetal14. cern, cret=to separateConcern DiscernSecret Secretary Discreet15. cid, cis=to cutDecide Decision ConcisePrecise Excide InciseIncisive Homicide SuicideBactericide16. claim,clam=to call outClaim Disclaim Declaim Declamatory Exclaim Proclaim Reclaim Acclaim Clamour 17. clud,clus=to shut or to closeConclude Conclusion Conclusive Include Exclude Preclude Seclude18. cord=heartAccord Concord DiscordRecord Cordial19. cresc,cret,cre=to growCrescent Increase Create CreatorCreative Creature Concrete DecreaseIncrement Accretion20. cub,cumb=to lie downIncumbent Succumb Concubine Cubicle21. cult= to tillCult cultivate culture agriculture aquaculture Counterculture cyberculture acculturation self-culture 22. cur(r),curs, cours= to runOccur current recur concur excursion Precursor course discourse recourse discursive 23. cur= careCure curious accurate secure procureCurate curator manicure24. cycle= circleCycle bicycle unicycle autocycle encyclopedia Cyclone hemicycle cyclist25. dem=the peopleDemocracy democrat demos demography epidemic Pandemic epidemiology democratically26. dic, dict=to sayIndicate dictate dictator diction dictionaryContradict predict benediction maledictionPredictable jurisdiction prediction abdication27. doc, doct=to teachDoctor document doctrine docile doctorship28. duc, duct=to leadConduct educate introduce produce deduceReduce seduce abduct inductMisconduct productivity induction reproductionOverproduction productive self-educationUnderproduction non-conductor semi-conductor29. equ=even, equalEqual equate adequate equivalent equableEquator equilibrium equivocal30. fac, fact,fect=to do, to makeFacile faculty fact factor factory benefactorBenefaction affect effect defect infect perfect perfection Manufacture effective facture affectionate31. fic=to doefficient Deficiency magnificent significant proficient sufficient official office31．Fer= to carry, to bring, to bearConfer differ offer prefer refer suffer transfer differentialdifferentiation32. fid= to trustFidelity confide confidence diffident33. fin= end, limitFinal finish fine finance finite confine define Definition definitive definite unconfined34. flu,flux=to flowFluid fluent influence influenza affluent confluence Influent effluent efflux relux afflux conflux influx Fluency influent influential fluctuate fluctuation 35. form= shape, to formForm formal inform reform formula conform Deform transform informer reformer formality Reformation conformity formation formative Transformative informative formulate perform Preinform36. fort, forc=strongEffort comfort force enforce fort fortifyFortitude reinforce enforceable fortifiablePerforce discomfort unforced37. frag, fract= to breakFragile fragment fraction fracture infraction38. fund, found, fus=to melt, to pourConfuse refuse profuse effuse effusion effusiveFuse refund confound transfuse interfuse39. gen, gener=birth, raceGenius genuine generate generalGenesis genetic congenial generator genocide Ingenious ingenuous40. ger, gest= to carryDigest suggest gesture ingest congest41. gnos, gnit, gniz= to knowDiagnose diagnosis cognition recognition recognize Agnostic precognition ignore ignorance ignorant42. grad, gress= to stepGrade gradual graduate aggress progress congress Degrade digress regress progressive postgraduate Ingredient degree (grad=gred, gree)43. gram=written, characterGrammar gramophone program telegram diagram Graph graphics autograph calligraphy photograph44. grat= pleasing, thankfulCongratulate grateful gratitude gratify gracious(grac=grat)45. it= to goAmbition exit transit circuit initial initiateSedition obit ambitious itinerary transient transience Issue(it=iss) issuer46. jac, ject= to throwAdjacent inject project eject reject adjective Object subject deject projection rejectionObjection object47. junct, join=to connectConjunction juncture disjunctive injunction adjunct Junction adjoin rejoin subjoin junction conjuncture Disjoint joint disjunction48. jur, just= law, rightJury jurist injury jurisdiction justice justifyAdjust readjust juridical prejudice judgment misjudge 49. lat=to carry, to bring, to bearTranslate relate superlative legislate ablationCollate delate illation circulate population legislator Dilate dilation elate elation ventilate ventilation50. leg, lig, lect=to chooseCollect elect select neglect intellectual elegantEligible eligibility negligent intelligent recollect51. loc= placeLocal locate locomotive locomotion allocate collocate dislocate relocate translocation52. log, logue=speech, reasonLogic apologize apologia eulogy prologue epilogue epilogue(结尾) tautology (同义反复) sociology trilogy neology (旧词新义) pseudology (说谎术) geology monologue sinology 53．Loqu,locut=to speakEloquent elocution colloquial interlocutor loquacious locution circumlocution magniloquent grandiloquent54. lud, lus= to play or mockDelude illusion prelude elude ludicrous collude postlude Delusory elusory55. man, manu=handManual manuscript manufacture manipulate manacle manicure Manifesto emancipate mandate56. medi= middleMedium mediate medieval median intermediate mediocre Medication57. min=small, lessMinute minus minority minister diminish administerMiniature minimal minimus minimize58. mit, miss=sendCommit dismiss missile emit omit permit submit transmit Dismiss remissible mission missionary demit surmise (臆测) Premise demise (转让) compromise59. mort=deathMortal immortal mortgage postmortem mortify (克服，修行) 60．Mov,mot,mob= to moveMotive commotion (混乱) mobilize mobility demobilize motif Mobbish mobocracy motile61. nasc, nat=to be bornNative cognate natal innate prenatal pregnant neonate Nascent renaissance62. not=to get to knowNotion denote notify notorious annotation connote63. ord, ordin=orderOrdinary ordinal subordinate ordain coordinate64. part= partApart depart participate particular partial impart counterpart Impartial partisan65. pati,pass, path =to suffer or endure, feelingPatient compatible passion passive compassion passibleDispassionate compassion impassive apathy sympathy66. patri, patern=father, fatherlandPatriarch patriot patron expatriate paternal67. pel,puls= to drive , to pushCompel dispel compulsion repel propel expel repulse impel pulse impulse pulsive68. pend, pens= to hang, to weigh, to paySuspend suspense append pendulum expend dispense compensate pension69. pet, petit=to seek, to striveCompete competent appetite petition repetition impetus impetuous70. ple(t),plen= to fill, fullComplement complementary supplement deplete replete (充实的) Replenish (再备足)71. plic, plicate, ply=to bend, or foldImply multiply comply complicate explicate supplicate72. pon, pos(it)=to place, to putCompose expose oppose postpone propose suppose depose Deposit dispose impose73. port=carryPortable export import transport disport(娱乐) deport74．Prehend, prehens, pris=to seizeComprehend apprehend reprehend prehensile comprise enterprise enterprising75. press= to pressOppress compress depress repress suppress76. prob, prov=to testProbe probable probate probation reprobate approve disprove 77. reg, rect=to rule, to guide, to governRegion erect rectify rectangle regime rectitude78. rupt= to breakCorrupt interrupt disrupt erupt rupture bankrupt abrupt irrupt79. sci= to knowConscience conscious subconscious omniscient nescience prescient80. scrib, script= to writeDescribe inscribe prescribe subscribe proscribe transcribeascribe postscript scripture81. sect=cutSector insect bisect dissect intersect transect vivisect82. sent, sens=to feelSentiment nonsense consent consensus dissent assent resent sensuous83. seq, secut= to followConsequent subsequent sequence sequel consecutive execute Persecute84. sid,sess=to sitPreside reside subside dissident assiduous insidious session Possess assess85. sign=markSignify, assign consign resign presignify86. sist=to standAssist consist resist persist desist subsist87. speci,spect, dpic=to lookExpect inspect respect prospect suspect spectator spectacle species conspicuous auspice despise88. spir= to breathInspire conspire respire aspire expire perspire transpire89. st, stat=to standConstant circumstance contrast ecstasy obstacle stationary90. tang, tact=to touchContact tact tactile intact tangent (切线) tangible contagious 91. ten, tin, tent, tain= to holdDetain retain sustain abstain tenant tenacious92. tend, tens, tent= stretchExtend intend pretend intense tense contend distend ostentation93. tract=to drawAttract contract extract retract detract distract protract subtract 94. un=oneUnify unite union unity unique uniform unicorn unilateral Unison95. ven, vent= to comeConvene convenient invent prevent avenue interveneRevenue adventure circumvent96. vert, vers=to turnConvert converse reverse universe avert divert pervert subvert 97. vid, vis=to seeEvident divide provide advise revise supervise vision visible 98.viv,vit=to live, lifeVivid revive survive vital revivify vivacious99. voc, vok=to call, voiceAdvocate provoke vocal vocation avocationEvoke invoke revoke100. volv, volut= to rollInvolve revolve revolution volume evolve devolve revolt V oluble。