warn

/wɔːrn/
verb
  1. To tell someone about a possible danger, problem, or unpleasant thing so that they can avoid it or be prepared.
    • The sign warns drivers of sharp curves ahead.
    • I warned my little brother not to touch the hot stove.
    • The weather service warned residents about the approaching storm.
  2. To advise someone strongly to do or not do something.
    • My doctor warned me to eat less sugar.
    • Her parents warned her against staying out too late.
    • The teacher warned the students to study for the final exam.
Antonyms