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agitate (v.)[agitate 词源字典]: 1580s, "to disturb," from Latin agitatus, past participle of agitare "to put in constant motion, drive onward, impel," frequentative of agere "to move, drive" (see agitation). Literal sense of "move to and fro, shake" is from 1590s. Related: Agitated; agitating.[agitate etymology, agitate origin, 英语词源]