a·mok / əˈmək; əˈmäk/ (also a·muck) • adv. (in phrase run amok) behave uncontrollably and disruptively: stone-throwing anarchists running amok | fig. her feelings seemed to be running amok. ORIGIN: mid 17th cent.: via Portuguese amouco, from Malay amok ‘rushing in a frenzy.’ Early use was as a noun denoting a Malay in a homicidal frenzy; the adverb use dates from the late 17th cent.