Merriam-Webster Online Dictionary
warn (verb)transitive verb
1.
a) to give notice to beforehand especially of danger or evil
b) to give admonishing advice to - counsel
c) to call to one's attention - inform
2.
intransitive verb
to order to go or stay away - often used with off to give a - warning
Merriam-Webster Online Thesaurus
warn (verb)to give notice to beforehand especially of danger or risk
SYNONIMS:
advise, alert, caution, forewarn, wakeRELATED WORDS:
augur, forecast, foretell, harbinger, predict, presage, prognosticate, prophesy; apprise, inform, notify, tip (off); admonish; bode, forebode ( forbode), foreshadow, foretoken, portendNEAR ANTONYMS:
imperil, risk