- a prefix meaning “out of,” “from,” and hence “utterly,” “thoroughly,” and sometimes meaning “not” or “without” or indicating a former title, status, etc.; freely used as an English formative: exstipulate; exterritorial; ex-president (former president); ex-member; ex-wife.
Origin of ex-1
- variant of exo-.
- a prefix identical in meaning with ex- 1, occurring before vowels in words of Greek origin: exarch; exegesis.
Origin of ex-3
- out of; outside of; fromexclosure; exurbia
- a variant of exo- exergonic
Word Origin and History for ex-
word-forming element, in English meaning mainly "out of, from," but also "upwards, completely, deprive of, without," and "former;" from Latin ex "out of, from within," from PIE *eghs "out" (cf. Gaulish ex-, Old Irish ess-, Old Church Slavonic izu, Russian iz). In some cases also from Greek cognate ex, ek. PIE *eghs had comparative form *eks-tero and superlative *eks-t(e)r-emo-.
- Outside; out of; away from:excementosis.