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:
  • 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.