vigilancewatchfulnesscarefulnessattentivenessguardednesscarecautioncautiousnesswarinesscharinessalertnesshypervigilancecircumspectionprudenceheedfulnessheedmindfulness

动词

warn (someone) of a danger, threat, or problem, typically with the intention of having it avoided or dealt with.

he alerted people to the dangers of smoking

同义词：

warnnotifyapprisecautionput on one's guardforewarnput on the qui vivearouse informal：tip offclue input in the pictureput wise

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