9 letters · 11 points in Scrabble
adjective joyously unrestrained
originBorrowing from Latin ēbulliēns, present participle of ēbulliō (“to boil”), from bulliō (“to bubble up”) (English boil). Compare bubbling, bubbly, and perky, which use a similar metaphor.
Etymology from Wiktionary, CC BY-SA 3.0