arbitrary artless asleep bare-handed bluff blunt born yesterday broad brusque candid capricious careless childlike confiding culpably negligent defenseless derelict direct downright explicit exposed forthright frank frankhearted free free-speaking free-spoken free-tongued genuine goofing off guardless guileless hasty heart-to-heart heedless helpless imprudent inadvertent inattentive incautious inconsiderate indiscreet ingenu ingenuous innocent inobservant involuntary laissez-faire lax loose naive napping neglectful neglecting negligent nodding noninterfering nonrestrictive off-guard open openhearted outspoken overly permissive permissive plain plain-spoken procrastinating reasonless relaxed remiss round scamping simple simplehearted simpleminded sincere single-hearted single-minded skimping slack sleeping slighting slurring straight straight-out straightforward thoughtless transparent trustful trusting unalert unarmed unarmored unattended uncalculating uncautious unchecked uncircumspect unconscious unconstrained uncovered undefended undesigned unequivocal unfortified ungarrisoned unguided unintended unintentional unmeant unmeditated unplanned unpremeditated unprepared unprompted unprotected unpurposed unready unreasoning unreflecting unreserved unrestrained unrigorous unscreened unsheltered unshielded unsophisticated unsuspecting unsuspicious unthinking unthought-of unthoughtful unvigilant unwarned unwary unwatched unwatchful unwise unwitting vulnerable weaponless