seethe: [OE] Seethe was once the standard word for ‘boil’, until it began to be overtaken by the French import boil in the Middle English period. In the 16th century a new meaning, ‘soak’, emerged, now preserved only in the past participle sodden. And the modern metaphorical ‘be violently agitated’ came on the scene in the 17th century. The word goes back to a prehistoric Germanic *seuth-, which also produced German sieden and Dutch zieden ‘boil’. English suds probably comes from a variant of the same base. => sodden[seethe etymology, seethe origin, 英语词源]