Answer: unalert

AnswerCrossword Clue
UNALERTCaught napping.
UNALERTNot watchful.
UNALERTDeaf to danger.
UNALERTInattentive.
UNALERTNot on guard.
UNALERTOff guard.
UNALERTOff one's guard.
UNALERTDrowsing
UNALERTCareless
UNALERTAsleep at the switch