E
| Root | Meaning in English | Origin language | Etymology (root origin) | English examples |
|---|---|---|---|---|
| ec- | out | Greek | ἐκ (ek) | eccentric |
| eco- | house | Greek | οἶκος (oikos) | ecology, economics, ecumenism |
| ecto- | outside | Greek | ἐκτός (ektos) | ectoderm |
| ed-, es- | eat | Latin | edere, esus | edible |
| ego- | self, I (first person) | Latin, Greek | ego, ἐγώ | egocentric |
| ego-, eg- | goat | Greek | αἴξ (aix) | egophony |
| em-, empt- | buy | Latin | emere, emptus | exemption, preempt, redeem |
| eme- | vomit | Greek | ἔμετος (emetos) | emetic |
| emul- | striving to equal, rivaling | Latin | aemulus, aemulare | emulator |
| en-, em- | in | Greek | ἐν (en) | emphasis |
| encephalo- | brain | Greek | ἐγκέφαλος (enkephalos) | encephalopathy |
| endo- | inside | Greek | ἔνδον (endon) | endocrine, endocytosis |
| engy- | narrow | Greek | ἐγγύς (engys) | |
| ennea- | nine | Greek | ἐννέα (ennea) | ennead, enneagon |
| ens- | sword | Latin | ensis | |
| eo-, eos-, eoso- | dawn, east | Greek | Ἠώς/Ἕως | Eocene |
| ep-, epi- | upon | Greek | ἐπί (epi) | epicenter, epitaph, epoch |
| epistem- | knowledge or science | Greek | ἐπιστήμη (epistēmē) | epistemic |
| equ-, -iqu- | even, level | Latin | aequus | equal, equivalence |
| equ- | horse | Latin | equus | equestrian |
| erg- | work | Greek | έργον (ergon) | ergonomics |
| err- | stray | Latin | errare | aberration, errant |
| erythr- | red | Greek | ἐρυθρός (eruthros) | erythrocyte |
| eso- | within | Greek | ἔσω (esō) | esoteric |
| etho-, eth-, ethi- | custom, habit | Greek | ἦθος (ēthos) | ethology |
| ethm- | sieve | Greek | ἠθμός (hethmos); ἤθειν (hethein) | ethmoid |
| ethn- | people, race, tribe, nation | Greek | ἔθνος (ethnos) | ethnarch, ethnic |
| etym- | true | Greek | ἔτυμος (etumos) | etymology |
| eu- | well, good | Greek | εὖ (eu) | euphoria, euthanasia |
| eur- | wide | Greek | εὐρύς (eurus) | Europe |
| ex-, e-, ef- | from, out | Latin | ex | exclude, extend, extrude |
| exo- | outside | Greek | ἔξω (eksō) | exoskeleton, exothermic |
| exter-, extra- | outer | Latin | externus | exterior |
| extrem- | outermost, utmost | Latin | extremus | extremity, extremophile |
Read more about this topic: List Of Greek And Latin Roots In English