- ebullient (adj.)
[ebullient 词源字典]
- 1590s, "boiling," from Latin ebullientem (nominative ebulliens), present participle of ebullire "to boil over," literally or figuratively, from ex- "out" (see ex-) + bullire "to bubble" (see boil (v.)). Figurative sense of "enthusiastic" is first recorded 1660s.[ebullient etymology, ebullient origin, 英语词源]