Meaning

verb be noisy with activity

verb be in an agitated emotional state

verb foam as if boiling

originThe verb is derived from Middle English sethen, seeth (“to boil, seethe; to cook; etc.”) [and other forms], from Old English sēoþan (“to boil, seethe; to cook; etc.”), from Proto-West Germanic *seuþan, from Proto-Germanic *seuþaną (“to boil, seethe”), from Proto-Indo-European *h₂sewt-, *h₂sew-, *h₂sut- (“to move about, roil, seethe”). The noun is derived from the verb. Cognates * Danish syde (“to…

Etymology from Wiktionary, CC BY-SA 3.0