warn

Verb
  1. Notify of danger, potential harm, or risk (synset 200871877)
    "The director warned him that he might be fired"; "The doctor warned me about the dangers of smoking"
  2. Advise or counsel in terms of someone's behavior (synset 200872241)
    "I warned him not to go too far"; "I warn you against false assumptions"; "She warned him to be quiet"
  3. Ask to go away (synset 200834732)
    "The old man warned the children off his property"
  4. Notify, usually in advance (synset 200834568)
    "I warned you that I would ask some difficult questions"

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