put on notice

Related
  • warnGive notice of peril
  • alertWarning or watchfulness
  • notifyFormally communicate information
  • cautionCareful attention to risk
  • adviseGive counsel to

forewarn · tip off · heads up · signal · flag · alarm · ultimatum · deadline · threat · consequence · reprimand · admonish · serve · summon · formal · letter · legal · eviction

Opposites
warning status

put on noticereassure

Ease someone's doubts

let off the hook · clear · exonerate · commend · approve

awareness/attention

put on noticeblindside

Surprise with unexpected force

catch off guard · ambush · mislead · ignore · overlook

security of position

put on noticereassure

Ease someone's doubts

secure · validate · back · vouch for · promote

Familiarity
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