| ek |  | ec-[126] | out | ἐκ (ek) | eccentric, ecstasy, ecstatic |
| ekklēsía |  | ecclesi- | assembly, congregation | ἐκκλησία (ekklēsía) from ἐκκαλέω (ekkaléō) “I summon” or “I call out” | Ecclesiastes, ecclesiastical |
| ēkheîn |  | ech- | sound | ἠχή, ἠχώ, ἠχοῦς, ἠχεῖν (ēkheîn), ἤχημα | anechoic, catechesis, catechism, catechist, catechize, catechumen, echo, echoic |
| oîkos |  | eco- | house | οἶκος (oîkos) | ecology, economics, economy, ecumenism |
| ektós |  | ecto-[127] | outside | ἐκτός (ektós) | ectoderm, ectoparasite, ectotherm |
| aíx |  | eg-[128] | goat | αἴξ, αἰγός (aíx, aigós) | egophony |
| aigyptos |  | egypt- | Egypt, egyptian | αἰγυπτος (aigyptos) | egyptology |
| eirḗnē |  | eiren- (iren-)[130] | peace | εἰρήνη (eirḗnē) “peace” | irenic (eirenic), irenology |
| ḗlektron |  | electr-[131] | amber | ἤλεκτρον (ḗlektron) | electric, electricity, electrolysis, electrolyte, electromagnetic, electron, electronic, polyelectrolyte |
| éleos |  | elem-, alm-[132] | pity | ἔλεος, ἐλέου (éleos, eléou), ἐλεημοσύνη (eleēmosúnē) | almoner, alms, eleemosynary |
| emeîn |  | eme-[133] | vomit | ἐμεῖν (emeîn), ἔμετος (émetos) | antiemetic, emesis, emetic, emetine, emetophobia, haematemesis |
| en |  | en-, el-, em-[134] | in | ἐν (en) | emphasis, enclitic, enthusiasm, ellipsis, elliptic |
| enantíos |  | enanti-[135] | opposite | ἐναντίος (enantíos) | enantiomer, enantiomerism, enantiomorph, enantiornithine |
| enképhalos |  | encephal- | brain | ἐγκέφαλος (enképhalos) | encephalopathy |
| éndon |  | endo-[136] | inside, within | ἔνδον (éndon) | endocardial, endocerid, endocrine, endocytosis, endogamy, endogenous, endoscopy, endoskeleton, endosperm, endospore |
| engús |  | engy-[137] | narrow | ἐγγύς (engús) | Engystomops, hypengyophobia |
| ennéa |  | ennea-[138] | nine | ἐννέα (ennéa), ἐννεάς, ἐννεάδος (enneás, enneádos) | ennead, enneadic, enneagon, enneagram, enneahedron, enneamer, enneastyle, enneasyllabic, enneode |
| Ēṓs |  | eo-, eos-[139] | dawn, east | Ἠώς, Ἕως (Ēṓs, Héōs) | Eocene, eohippus, Eosentomon, eosin, eosinophil, eosinophilic, Eozoic |
| epí |  | ep-, epi-[140] | upon | ἐπί (epí) | ephedra, ephemeral, ephemeris, epicenter, epidemic, epilog, epiphany, episteme, epistemic, epistemology, epitaph, epitaphios, epithet, epitome, epoch, eponymous |
| eréssein |  | ere-[141] | row | ἐρέσσειν (eréssein), ἐρέτης (erétēs) “rower”, ἐρετμόν (eretmón), εἰρεσία | trireme, trierarch, hyperetes |
| wérgon |  | erg-, org-, urg-[142] | work | ϝέργον (wérgon), έργον (érgon), ἐργάτης (ergátēs), ὄργανον (órganon), ὀργανικός (organikós), ὄργια (órgia) | allergic, allergy, argon, demiurge, dramaturgy, endoergic, energetic, energy, erg, ergate, ergatocracy, ergodic, ergometer, ergonomics, ergophobia, exoergic, gamergate, georgic, heterorganic, homorganic, liturgy, metallurgy, microorganism, organ, organic, organism, organist, organize, organogenesis, organoid, organoleptic, orgiastic, orgy, parergon, surgeon, synergism, synergy, theurgic, theurgist, theurgy, zymurgy |
| érōs |  | erot-[143] | (sexual) love | ἔρως, ἔρωτος (érōs, érōtos) | erogenous, erotic, erotomania, erotophilia, erotophobia |
| eruthrós |  | erythr-[144] | red | ἐρυθρός (eruthrós), ἐρύθημα (erúthēma) | erythema, Erythraean, erythraemia, erythroblastopenia, erythrocyte, erythrocytosis, erythromelalgia, erythrophobia, erythrophore, erythroprosopalgia |
| ésō |  | eso-[145] | within | ἔσω (ésō) | esophoria, esoteric, esotericism, esotropia |
| etheîn |  | eth-[146] | custom, habit | ἐθεῖν (etheîn), ἦθος (êthos) | ethic, ethics, ethology, ethos |
| ētheîn |  | ethm-[147] | sieve, sift | ἠθεῖν (ētheîn), ἠθμός (ēthmós); ἤθειν (ḗthein) | ethmoid |
| éthnos |  | ethn-[148] | people, race, tribe, nation | ἔθνος (éthnos), ἐθνικός (ethnikós) | ethnarch, ethnarchy, ethnic, ethnoarchaeology, ethnography, ethnomusicology, polyethnic |
| étumos |  | etym-[149] | TRUE | ἔτυμος (étumos) | etymologic, etymologicon, etymologist, etymologize, etymology, etymon |
| eû |  | eu-[150] | well, good | εὖ (eû) | aneuploidy, eudaemon (eudemon), eukaryote, euphony, euphoria, euphoric, euploid, euthanasia |
| eurús |  | eur-[151] | wide | εὐρύς (eurús), εὖρος “breadth, width” | aneurysm, Europe, eurypterid, microaneurysm |
| éxō | | exo-[152] | outside | ἔξω (éxō) | exogamy, exoplanet, exoskeleton, exosome, exosphere, exoteric, exothermic, exotic, exoticism, exotropia |
