բ. warn (of, about); (վտանգից) warn (against), forewarn (of, about), caution (against), put on one’s guard; (տեղեկացնել) let know beforehand of, (about), tell beforehand (about); (ծանուցել) notify (about), give notice (about).

forewarn,warn,caution,alert,admonish,forewarn of,forewarn about,put on one's guard,tell beforehand about,warn off