unwatchful (adj.)

• asleep
• derelict
• inadvertent
• inattentive
• incautious
• laissez-faire
• lax
• loose
• napping
• neglectful
• negligent
• nodding
• nonrestrictive
• off-guard
• permissive
• relaxed
• remiss
• slack
• sleeping
• slighting
• unalert
• unguarded
• unprepared
• unready
• unvigilant
• unwary