What is another word for "warning"?

Roget's Thesaurus (1911) lists these synonyms for "warning": abandon, abandonment, abstain, abstinence, abuse, abusive, alone, apart, aside, augury, auspice, away, back, ban, bark, behind, behold, beholder, big, bird, bluster, bully, bystander, candle, cast, cede, cession, clinch, commination, comminatory, course, culls, curse, deed, defiance, defiant, defy, denunciation, derelict, dereliction.