warn

When you warn someone, you advise them to be careful or tell them about a problem or danger. If you perform a dangerous stunt, you should probably warn your audience, "Don't try this at home."

Many traffic signs are meant to warn drivers about hazards, like bridges that get slippery in the rain or bumps in the road. And the purpose of a dog's growl is to warn another dog (or human) that it's stressed or fearful. A warning is a helpful message, no matter what form it comes in, and to warn is to send this message. The Old English root is warnian, "give notice of impending danger."

Definitions of warn
  1. verb
    notify of danger, potential harm, or risk
    “The director warned him that he might be fired”
    “The doctor warned me about the dangers of smoking”
    Synonyms:
    admonish, discourage, monish
    admonish or counsel in terms of someone's behavior
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    types:
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    forewarn, previse
    warn in advance or beforehand; give an early warning
    admonish, caution, monish
    warn strongly; put on guard
    threaten
    to utter intentions of injury or punishment against:"He threatened me when I tried to call the police"
    alarm, alert
    warn or arouse to a sense of danger or call to a state of preparedness
    offer
    threaten to do something
    wake
    make aware of
    type of:
    inform
    impart knowledge of some fact, state or affairs, or event to
  2. verb
    notify, usually in advance
    “I warned you that I would ask some difficult questions”
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    type of:
    inform
    impart knowledge of some fact, state or affairs, or event to
  3. verb
    admonish or counsel in terms of someone's behavior
    “I warned him not to go too far”
    “I warn you against false assumptions”
    “She warned him to be quiet”
    synonyms: admonish, discourage, monish
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    type of:
    advise, counsel, rede
    give advice to
  4. verb
    ask to go away
    “The old man warned the children off his property”
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    type of:
    enjoin, order, say, tell
    give instructions to or direct somebody to do something with authority
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