Meaning

verb admonish or counsel in terms of someone's behavior

verb warn strongly; put on guard

verb take to task

originInherited from Middle English a(d)monisshen (adapted through -ishen (“-ish”) from earlier amonesten), from Old French amonester (modern French admonester), from an unattested Late Latin or Vulgar Latin *admonestāre, from Latin admoneō (“to remind, warn”), from ad- + moneō (“to warn, advise”).

Etymology from Wiktionary, CC BY-SA 3.0