(adv.) By mistake.

aberrant abroad adrift afield all abroad all off all wrong askew astray at fault awry bad badly below the mark beside the mark beside the point blamable blameful bootlessly bum censurable cockeyed confused convulsed corrupt crappy culpable deceptive defective delusive deranged deviant deviational deviative disarranged discomfited discomposed disconcerted dislocated disordered disorderly disorganized dissatisfactory distorted disturbed errant erring erroneous erroneously evil evilly fallacious fallaciously FALSE falsely far from it faultful faultfully faultily faulty flawed fruitlessly guilty haywire heretical heterodox ill illogical illusory imperfect imperfectly improper improperly in disorder in vain inaccurately inappropriately incorrect incorrectly indiscreetly inopportunely misinterpret misplaced mistake mistakenly misunderstand not right not true off off the track on the fritz out out of gear out of joint out of kelter out of kilter out of order out of place out of tune out of whack peccant perturbed perverse perverted poor poorly punk reprehensible roily rotten self-contradictory shuffled sick sinful straying to no purpose turbid turbulent unfactual unfavorably unholy unorthodox unpropitiously unproved unsatisfactory unsettled untoward untrue untruly unwisely up upset vainly wide wrong wrongly