T
Root Meaning in English Origin language Etymology (root origin) English examples tac-, -tic- be silent Latin , reticent, reticence, tacit, taciturn tach- swift Greek (), () tachometer, tachycardia, tachyrhythmia, tachytelic taeni- ribbon Greek (), (), () diplotene, leptotene, pachytene, taenia, taenidia, taenidium, taeniodont, Taeniolabis, zygotene tag-, tax- (ΤΑΓ) arrange, order Greek (), (), (), (), () ataxia, chemotaxis, epitaxis, eutaxy, hypotaxis, magnetotaxis, metasyntactic, parataxis, phonotactic, phonotactics, phototaxis, rheotaxis, syntactic, syntagma, syntagmatic, syntax, tactic, tagma, taxis, taxonomy, thermotaxis tal- ankle Latin talus tang-, , tact-, tag- touch Latin (past participle ) attain, contact, contagious, contingent, contingency, contiguous, intact, tactile, tangent, tangible tapet- carpet Latin , tapestry, tapetum, tapis tarac- (ΤΑΡΑΧ) stir Greek (), , ataractic, ataraxia tard- slow Latin retard, tardigrade, tardy tars- ankle Greek (tarsós, "a flat basket") metatarsus, tarsal, tarsoclasis, tarsometatarsus, tarsus taur- bull Greek () Minotaur, taurobolium, taurocholic, tauromachy taur- bull Latin Taurus tec- (ΤΑΚ) melt Greek eutectic, eutectoid tec-, toc- (ΤΕΚ) childbirth Greek , () ditokous, dystocia, embiotocid, monotocous, teknonymous, teknonymy, tokophobia techn- (ΤΕΚ) art, skill Greek (), (), (), () architect, polytechnic, techne, technique, technocracy, technocrat, technogaianism, technology, technophilia, technophobia, tectonic tecn- child Greek , () teknonymous, teknonymy teg-, tect- cover Latin , contection, detect, detectable, detection, detective, detector, integument, integumentary, obtect, pretectal, pretectum, protect, protection, protective, protector, protectorate, protectory, protectress, protectrix, protégé, protégée, tectrix, tectum, tegmen, tegmental, tegula, tegular, tegument, tile, tog, toga, togate, togavirus, toggery tele- far, end Greek () telegram, telegraph, telemetry, telepathy, telephone, telescope, television tele- complete Greek (), () atelectasis, ateleiosis, atelophobia, teleology, telesis, toll tem-, tom- (ΤΕΜ) cut Greek (), (), (), (), () acrotomophilia, anatomy, apotemnophilia, atom, atomic, autotomy, diatom, dichotomous, dichotomy, ectomy, entomology, entomomancy, entomophagous, entomophilous, epitome, monatomic, pentatomic, polyatomic, polytomy, Temnospondyli, tmesis, tome, tomogram, tomography, trichotomous, trichotomy temn-, tempt- – Latin contemn, contemnible, contempt, contemptible, contumacious, contumacy, contumelious, contumely tempor- time Latin , contemporaneous, contemporary, extemporaneous, tempo, temporal, temporary ten-, ton- (ΤΑΝ) stretch Greek (), τεινόμενον, τανύειν (tanúein), τετανός (tetanós), (tónos), (tonikós), τονή (tonḗ), τάσις (tásis), ταινία anhemitonic, atelectasis, atonic, atritonic, barytone, catatonia, catatoniac, catatonic, decatonic, diatonic, ditone, dodecatonic, dystonia, ectasia, enneatonic, entasia, entasis, epitasis, hemitonia, hemitonic, heptatonic, hexatonic, hyperisotonic, hypertonia, hypertonic, hypotenuse, hypotonia, hypotonic, isotonic, microtone, monotone, monotonic, monotonous, monotony, neoteny, octatonic, oxytone, paroxytone, pentatonic, peritoneum, polytonic, proparoxytone, protasis, pyelectasis, syntonic, tetanolysin, tetanospasmin, tetanus, tetany, tetratonic, tone, tonic, tonoplast, tritonic, tune ten-, -tin-, tent-, tain-, tinu- hold, keep Latin , abstain, abstention, abstinence, abstinent, appertain, appertinent, appurtenance, appurtenant, contain, containment, content, contentive, contentment, continence, continent, continental, continual, continuance, continuant, continuation, continuative, continue, continuity, continuous, continuum, contratenor, countenance, detain, detainder, detainee, detainer, detainment, detention, detinue, discontent, discontentment, discontinuance, discontinuation, discontinue, discontinuity, discontinuous, entertain, entertainment, equicontinuity, equicontinuous, impertinence, impertinent, incontinence, incontinent, intenible, intercontinental, irretentive, lieutenant, maintain, maintenance, malcontent, obtain, obtainment, obtention, pertain, pertinacious, pertinacity, pertinence, pertinent, purtenance, reobtain, retain, retainer, retainment, retention, retentive, retinue, se-tenant, sustenance, sustentacular, sustentaculum, sustentation, sustention, tenable, tenace, tenacious, tenacity, tenancy, tenant, tenet, tenor, tenure, tenurial, tenuto, transcontinental tend-, tens- stretch, strain Latin (past participle tensus) ambitendency, attempt, attend, attendee, attent, attention, attentive, coextend, coextension, coextensive, contend, contention, contentious, detent, détente, distend, distension, distent, distention, entendre, entente, extend, extensible, extension, extensional, extensionality, extensive, extensivity, extensor, extent, inattention, inattentive, inextensible, intend, intense, intensification, intension, intensional, intensity, intensive, intent, obtend, obtension, ostensible, ostension, ostensive, ostensory, ostent, ostentation, ostentatious, portend, portension, portent, portentous, pretend, pretense, pretension, subtend, subtense, superintend, superintendency, superintendent, tempt, temptation, tend, tendency, tendential, tendentious, tender, tense, tensible, tensile, tensility, tension, tensure, tent, tentacle, tentacular, tentage, tentation, tentative, tentiginous, tentorium tenu- slender, thin Latin "make thin", from "thin" attenuate, extenuate, tenuous tep- be warm Latin subtepid, tepefaction, tepid, tepidarium, tepidity, tepor ter-, trit- rub, wear Latin , attrition, contrite, contrition, detriment, detrimental, detrital, detrition, detritivore, detritivorous, detritus, retriment, tribulation, trite, triturate, trituration, triture tere- guard Greek (), () synteresis teret- rounded Latin , subterete, teretial terg-, ters- wipe Latin , absterge, abstergent, abstersion, abstersive, deterge, detergency, detergent, terse termin- boundary, limit, end Latin determine, interminable, terminal, termination tern- three each Latin ternary, ternion terr- earth Latin inter, subterranean, terrace, terracotta, terrain, terrarium, terrestrial, territory terti- third Latin tertian, tertiary test- witness Latin attest, contest, detest, protest, testament, testify, testimony tetart- fourth Greek () tetartanopsia, tetartohedric tetr- four Greek , () diatessaron, tetragon, tetrahedron, tetralogy, tetrameter, tetraphobia, tetrapod, tetrode teuch- make Greek (), , (), (), (), (), () Heptateuch, octateuch, Pentateuch tex-, text- weave Latin , context, subtle, pretext, text, textile, texture thalam- chamber, bed Greek () epithalamion, hypothalamus, prothalamion, thalamotomy, thalamus thalass- sea Greek () Panthalassa, thalassemia, thalassic, thalassophobia than- (ΘΑΝ) death Greek , () euthanasia, thanatocoenosis, thanatoid, thanatology, thanatophobia, thanatophoric, thanatopsis thaumat- miracle Greek () thaumatology, thaumaturge, thaumaturgy the-, thus- god Greek () atheism, atheistic, ditheism, enthusiasm, monotheism, Pantheon, polytheism, Thea, theobromine, theocracy, theodicy, Theodore, theogony, theology, theophobia, Timothy, tritheism the- (ΘΕ) put Greek (), (), (), (), (), () anathema, anathematic, antithesis, antithetic, apothecium, athematic, Bibliotheca, bodega, boutique, deem, doom, enthesis, enthetic, epenthesis, epenthetic, epitheca, epithet, hypothec, hypothesis, monothematic, nomothetic, oligosynthetic, parenthesis, parenthetic, polysynthetic, prosthesis, prosthetic, prothesis, prothetic, pseudothecium, synthesis, synthetic, theca, thecium, thematic, theme, Themis, thesaurus, thesis, treasure thea- view Greek (), () amphitheatre, metatheatre, theatre, theatric thel- nipple Greek () athelia, endothelium, epithelium, mesothelioma, mesothelium, thelium, thelial theori- speculation Greek (), (), () theorem, theoretic, theorist, theorize, theory ther- beast, animal Greek () therapsid, therianthropy, theroid, theropod, theropsid therap- serve Greek (), (), , (), () therapeutic, therapist, therapy therm- heat, warm Greek (), (), () thermal, athermancy, diathermancy, ectotherm, endotherm, endothermic, exothermic, geothermic, homeothermy, hyperthermia, hypothermia, isotherm, poikilotherm, thermobaric, thermochromism, thermodynamic, thermolysis, thermometer, thermophilic, thermophobia, thermoplastic, thermoplegia, thermos, thermosphere, thermostat, thermostatic thig- touch Greek (), (), () antithixotropic, thigmonasty, thigmotaxis, thixotropic, thixotropy thorac- chest Greek () hemothorax, pneumothorax, thoracic, thorax thym- mood Greek () cyclothymia, dysthymia, euthymia, hyperthymia thyr- door Greek () thyratron thyre- large shield Greek () Thyreophora, thyroid, thyrotropin, thyroxine tim- be afraid Latin timid, timorous ting-, tinct- (TING) dye, moisten Latin , aquatint, distain, mezzotint, tinct, tinctorial, tincture, tinge, tingent, tint tom- cut Greek (), () anatomy, appendectomy, atom, dichotomy, ectomy, embolectomy, tome, tonsillectomy, vasectomy ton- stretch Greek (), (), () isotonic, monotone, tone top- place, location Greek () atopic, atopy, dystopia, ectopia, ectopic, entopic, epitope, eutopia, isotope, nomotopic, polytope, topiary, topic, topography, topology, toponomastics, toponym, toponymy, topos, utopia, zonotope torn- turn, rotate Latin from Greek tornare < () tornado, tournament, turn torpe- be numb Latin torpent, torpid, torpor torqu-, tort- twist Latin , contort, distort, extort, extortion, retort, torque, torsion, tortuous, torture tot- all, whole Latin subtotal, total, totality tox- arrow, bow, poison Greek () anatoxin, antitoxin, autotoxin, exotoxin, intoxicate, neurotoxin, psychotoxic, toxic, toxin, toxoid, toxology, toxoplasmosis trab- beam Latin , trabeculae trach- rough Greek () trachea, tracheids, tracheitis, tracheophyte, tracheostomy, tracheotomy, trachoma trag- he-goat Greek () tragedy, tragic, tragus trah-, tract- draw, pull Latin , frequentative of , abstract, attract, contract, detract, retract, subtract, subtrahend, tractable, traction, tractor trans-, tra-, tran- across Latin intransigent, tradition, transact, transcend, transient, transitory, transparent, transport trapez- four-legged, table Greek (), , (trapézion) trapeze, trapezium, trapezius, trapezohedron, trapezoid traum- wound Greek () trauma, traumatic, traumatize, traumatophobia trecent- three hundred Latin trecentennial, trecentillion trech-, troch- run, wheel Greek (), τρεχόμενον, τρόχος (tróchos), τροχός, τροχοῦ (trochós), τρόχωσις, τροχαῖος (trochaîos), τροχαϊκός (trochaïkós), τροχοειδής ditrochee, epitrochoid, hypotrochoid, trochaic, trochanter, trochee, trochelminth, trochlea, trochophore, trochoid tredec- thirteen Latin tredecimal treiskaidek- thirteen Greek () triskaidekaphobia, triskaidecagon trem- tremble Latin tremor trema- hole Greek τετραίνω, () monotrematous, monotreme, trema, tréma, trematode trep-, trop- turn Greek (), (), τρόπος, τρόπου (), τροπή, τροπῆς (), () allotrope, anisotropy, Atropos, ectropion, entropic, entropion, entropy, heliotropism, isentropic, isotrope, isotropic, isotropy, pleiotropic, pleiotropy, polytrope, protrepsis, protreptic, psychotropic, treponeme, treponematosis, treponemiasis, trope, tropic, tropism, tropopause, troposphere, trove treph-, troph- feed, grow Greek (), (), τροφή (), θρέμμα amyotrophic, atrophy, autotroph, auxotrophy, chemolithoautotroph, dystrophy, hemidystrophy, heterotroph, hypertrophy, lithoautotroph, lithotroph, mixotroph, organotroph, phagotrophy, photoheterotroph, phototroph, phototrophic, phototrophy, pogonotrophy, poliodystrophy, prototrophy, trophectoderm, trophic, trophobiosis, trophobiotic, trophoblast, trophoblastic, trophozoite trepid- tremble Latin "to tremble, hurry", from "alarmed, scared" intrepid, trepid, trepidation tri- three Greek , (), atritonic, triad, triadic, Triassic, tricycle, , triode, tripod, trisyllabic, tritonic tri- three Latin triangle, triumvir