insatiate

The story

1. Proto-Indo-European · derived from*seh₂-“to satiate, satisfy”
2. Latin · derived frominsatiātus
3. Middle English · inherited frominsaciate
4. English todayinsatiate

From Late Middle English insaciate, insaciat, insacyate (“insatiable”), from Latin insatiātus, from in- (prefix meaning ‘not’) + satiātus (“satisfied; having been satisfied”) (perfect passive participle of satiō (“to satisfy”), from satis (“enough; filled; plenty”) (ultimately from Proto-Indo-European *seh₂- (“to satiate, satisfy”)) + -ō (suffix forming regular first-conjugation verbs)).

Words from the same roots