Used other than figuratively or idiomatically: see spoiler, alert: a warning that plot elements in a drama will be exposed.

An indication, placed in a text, that the plot of a drama is about to be exposed / Indicates that the speaker is about to reveal something unanticipated or unpleasant

Alternative form of nonalertable / (bridge) Not alertable; Not requiring the partner to alert as part of a partnership agreement.

A warning that indicates an emergency situation. / A state of readiness to deal with such emergency situation.

(US, Canada) A public notification of a child abduction.

An alert sent by e-mail or similar electronic means.

(US, Canada) A public notification of a missing senior with dementia.

(emergency medicine) Metallic bracelets and necklaces documenting patient's preexisting health conditions and known allergies.

plural of red alert

plural of spew alert