forewarn

Give advance notice

To forewarn is to warn in advance—to alert someone about something before it happens: I should forewarn you that she's in a terrible mood.

The prefix fore- emphasizes the advance notice, though in practice forewarn and warn often mean the same thing.

The saying forewarned is forearmed suggests that knowing about danger ahead of time lets you prepare for it.

alert

alarm

Urgent warning signal

  • signalMessage-conveying cue
  • sirenWailing alert device
  • notifyFormally communicate information

inform · alert · caution · advise · tip off · heads-up · emergency · danger · evacuate · broadcast

predict

forecast

Prediction of future conditions

prognosticate · presage · foretell · portend · augur · divine · foreshadow · premonition · harbinger · omen

advise

counsel

Expert guidance offered

  • cautionCareful attention to risk
  • guideLeader or instruction book
  • briefShort in duration

inform · recommend · urge · prepare · admonish · apprise · enlighten · familiarize · update · clue in

precaution

preparation

Arranging things in advance

heed · wariness · circumspection · carefulness · discretion · mindfulness · preemptive · proactive · contingency · prevention

Categories
Opposites
advance notice vs. sudden revelation

forewarnblindside

Surprise with unexpected force

ambush · surprise · catch off guard · catch unawares · shock

protection vs. endangerment

forewarnbetray

Violate a trust

imperil · endanger · expose · set up · entrap

Phrases
Family

forewarning, forewarned, forewarnings, forewarns

Familiarity
Top 50,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G