The Oxford Thesaurus An A-Z Dictionary of Synonyms - warnv.

1) caution, admonish, advise, notify, apprise, inform, give (fair) warning, alert, give (prior) notice, put (someone) on notice or on guard or on the alert, make (someone) aware (of) , forewarn, tip off, Rare premonish: The entire population has been warned about the imminent hurricane. 2) advise, counsel, caution: You did warn me against investing in llama farms.