purposefully Antonyms

accidentally by accident by guess or by God by guess or by golly by guess or by gosh unconsciously meaninglessly unsuspectingly for no reason at haphazard by coincidence by guess and by golly by haphazard by lot by the seat of one's pants by the seat of your pants at an easy rate before you can say knife full bore anywise arbitrarily casually desultorily instinctively randomly willy nilly by chance against the clock aimlessly at random every which way haphazardly unknowingly by mistake full throttle before the ink is dry