off guard Synonyms

napping off her guard off his guard off one's guard off your guard unwary unalert off guard asleep by surprise bowl a googly unprepared unguarded unsuspecting unvigilant unwatchful not prepared unready unawares unaware careless derelict distracted flat-footed inadvertent inattentive incautious lost neglectful negligent oblivious reckless remiss surprised thoughtless with one's defences down