Meaning

verb move or cause to move back and forth

verb move with or as if with a tremor

verb shake or vibrate rapidly and intensively

originThe verb is derived from Middle English (i)shaken, from (i- (prefix forming past participle forms of verbs)) + shaken (“to tremble, shake; etc.”) + -en (suffix forming past participle forms of verbs). The adjective is derived from the verb. By surface analysis, shake (verb) + -n (a variant of -en (suffix forming past participle forms of verbs; and adjectives)).

Etymology from Wiktionary, CC BY-SA 3.0