Synonyms for Unpremeditatedly:

• adv

  •hastily (adverb)
  • Lickety Split,
  • on spur of moment.

• adv.

  •hastily (adverb)
  • impetuously,
  • suddenly,
  • recklessly,
  • heedlessly,
  • hastily,
  • promptly,
  • quickly,
  • Subito,
  • straightaway,
  • lickety-split,
  • rashly,
  • apace,
  • flat-out,
  • Posthaste,
  • carelessly,
  • speedily,
  • expeditiously,
  • swiftly,
  • fast,
  • hurriedly,
  • double-quick,
  • thoughtlessly,
  • on spur of the moment,
  • too quickly,
  • rapidly,
  • agilely,
  • impulsively,
  • post-haste,
  • precipitately,
  • nimbly,
  • prematurely.

• Other synonyms:

  •Other relevant words:
  • pronto,
  • unpredictably,
  • short,
  • fortunately,
  • immediately,
  • spurring,
  • spur track,
  • ad libitum,
  • prompt,
  • on occasion,
  • immediate,
  • apropos,
  • offhanded,
  • now and again,
  • libertine,
  • prodding,
  • at times,
  • debauched,
  • truehearted,
  • from time to time,
  • on the spur of the moment,
  • dead,
  • readily,
  • forthwith,
  • goading,
  • once in a while,
  • ad-lib,
  • extempore,
  • rakishly,
  • nonchalantly,
  • raffishly,
  • of a sudden,
  • out of the blue,
  • degenerate,
  • every which way,
  • extemporary,
  • loyal,
  • by the way,
  • all of a sudden,
  • fleetly,
  • unwittingly,
  • like a shot,
  • luckily,
  • offhand,
  • extemporaneous,
  • prod,
  • ad lib,
  • unknowingly,
  • flying,
  • willy-nilly,
  • haphazard,
  • straight off,
  • nervily,
  • dissipated,
  • by luck,
  • quick,
  • cheekily,
  • degraded,
  • by the bye,
  • right away,
  • fasting,
  • gad,
  • straight,
  • untimely,
  • profligate,
  • efficiently,
  • chop-chop,
  • firm,
  • instantly,
  • at once,
  • unthinking,
  • now,
  • urging,
  • goad,
  • dissolute,
  • directly,
  • haply,
  • on an irregular basis,
  • unrehearsed,
  • tight,
  • riotous,
  • promiscuously,
  • off-the-cuff,
  • branch line,
  • in short order,
  • spine,
  • cursorily,
  • immobile,
  • as luck would have it,
  • perchance,
  • headlong,
  • circumstantially.
  •Other relevant words (noun):
  • fortuitously,
  • abruptly,
  • spontaneously,
  • instinctively,
  • erratically,
  • unsystematically,
  • Unguardedly,
  • now and then,
  • accidentally,
  • adventitiously,
  • at random,
  • serendipitously,
  • spur,
  • snappily,
  • extemporarily,
  • involuntarily,
  • inadvertently,
  • irregularly,
  • incidentally,
  • occasionally,
  • extemporaneously,
  • indiscriminately,
  • impromptu,
  • haphazardly,
  • unexpectedly,
  • arbitrarily,
  • random,
  • in haste,
  • unconsciously,
  • casually,
  • indefinitely,
  • by chance,
  • Undesignedly,
  • randomly,
  • unthinkingly,
  • Indeliberately,
  • unintentionally,
  • incautiously,
  • brashly.

Antonyms for Unpremeditatedly:

• adv.

  • hastily
    delayed, slowly.