spontaneously Synonyms

impromptu ad libitum ad lib on the fly on impulse on a dime offhandedly unaffectedly impetuously extemporaneously unconsciously by nature off-the-cuff unintentionally Camembert cheese uninhibitedly unwittingly but of course off your own bat without preparing without thinking without being asked without prompting without rehearsal without preparation on the spur of the moment volitionally unthinkingly unprompted unpretentiously willingly voluntarily spontaneous abruptly headfirst hastily freely extempore discretionarily discretionally designedly casually automatically artlessly alimentally impulsively informally innately readily rashly