Synonyms for Unpremeditated:

• adj.

  •accidental (adjective)
  • inadvertent.
  •all (adjective)
  • unpremeditated.
  •casual (adjective)
  • more serendipitous,
  • most serendipitous,
  • un expected,
  • in frequent,
  • un-foreseen,
  • un foreseen,
  • un-planned,
  • un-premeditated,
  • in-frequent,
  • un-expected,
  • un planned,
  • un premeditated,
  • irregular.
  •extemporaneous (adjective)
  • most autoschediastic,
  • more autoschediastic.
  •extemporaneous/extemporary (adjective)
  • jamming,
  • un-studied,
  • un prepared,
  • more on-the-spot,
  • most improvisatory,
  • most improv,
  • more improvisatory,
  • most on the spot,
  • off top head,
  • more on the spot,
  • ex-temporary,
  • snappest,
  • more improv,
  • more jamming,
  • more improviso,
  • off the top head,
  • un-prepared,
  • off the top of head,
  • ex temporary,
  • most jamming,
  • most on-the-spot,
  • most improviso,
  • in-formal,
  • in formal,
  • madeup,
  • un studied.
  •haphazard (adjective)
  • de signless,
  • dis-orderly,
  • de-signless,
  • flukest,
  • Willy nilly,
  • helterskelter,
  • un systematic,
  • un-systematic,
  • in discriminate,
  • un concerned,
  • dis organized,
  • in-discriminate,
  • un-considered,
  • un considered,
  • more unmethodical,
  • dis-organized,
  • un-organized,
  • un organized,
  • devil may care,
  • un-concerned,
  • fluker,
  • un coordinated,
  • most designless,
  • unsystematic,
  • dis orderly,
  • all over map,
  • willynilly,
  • helter skelter,
  • un methodical,
  • un-methodical,
  • un-coordinated,
  • most unmethodical,
  • more designless.
  •hasty (adjective)
  • thoughtless,
  • Blundering,
  • unconsidered,
  • without forethought.
  •hit-or-miss (adjective)
  • trialand error.
  •impetuous (adjective)
  • going off deep end,
  • un-restrained,
  • Subitaneous,
  • going deep end,
  • un-reflecting,
  • headlong,
  • unreflecting,
  • head-long,
  • head long,
  • most unreflecting,
  • un bridled,
  • un reflecting,
  • more subitaneous,
  • more unreflecting,
  • most subitaneous,
  • un-bridled.
  •impromptu (adjective)
  • most extemporized,
  • most unscripted,
  • more unscripted,
  • more extemporized,
  • most faked,
  • un-scripted,
  • shot from hip,
  • more vamped,
  • more faked,
  • ex temporized,
  • ex-temporized,
  • most vamped.
  •impulsive (adjective)
  • improvised,
  • instantaneous,
  • rash,
  • hasty,
  • gone off deep end,
  • spontaneous,
  • hot and cold,
  • hot-and-cold,
  • ill-considered,
  • Unmeditated,
  • unrehearsed,
  • unprompted,
  • abrupt.
  •inadvertent (adjective)
  • un-witting,
  • un caring,
  • un witting,
  • not purpose,
  • un-caring,
  • most irreflective,
  • un-thought,
  • un thought,
  • more unthought,
  • un-heeding,
  • un-mindful,
  • unmindful,
  • in-advertent,
  • un heeding,
  • un mindful,
  • more irreflective,
  • in advertent,
  • most unthought,
  • unheeding,
  • unthought.
  •instinctive (adjective)
  • by seat of one pants,
  • un-learned,
  • re-gular,
  • in-tuitional,
  • more intuitional,
  • kneejerk,
  • in born,
  • more secondnature,
  • most secondnature,
  • in-grained,
  • by seat of pants,
  • re gular,
  • by seat pants,
  • in-born,
  • in tuitional,
  • most second nature,
  • un learned,
  • most second-nature,
  • by seat of ones pants,
  • more second-nature,
  • most intuitional,
  • more second nature,
  • by seat one's pants,
  • by seat one pants,
  • by seat ones pants,
  • secondnature.
  •involuntary (adjective)
  • in-voluntary,
  • re-flex,
  • more uncalculated,
  • most will less,
  • un-controlled,
  • more grudging,
  • more reflexive,
  • willless,
  • un controlled,
  • more willless,
  • in voluntary,
  • most reflexive,
  • most grudging,
  • be grudging,
  • re flexest,
  • re-flexest,
  • re flexer,
  • will less,
  • re-flexer,
  • un-calculated,
  • more will less,
  • un willing,
  • re flex,
  • most begrudging,
  • more begrudging,
  • most uncalculated,
  • more will-less,
  • most will-less,
  • most willless,
  • un-willing,
  • un calculated,
  • be-grudging.
  •not planned (adjective)
  • offhand,
  • extempore.
  •offhand (adjective)
  • without preparation,
  • throwaway,
  • off the hip.
  •off the cuff (adjective)
  • off-hand.
  •Other relevant words: (adjective)
  • impetuous,
  • taking for ride,
  • unmethodical,
  • subliminal,
  • casual,
  • ADLIB,
  • Undeliberate,
  • instinctual,
  • snapper,
  • Intuitional,
  • thrown off,
  • unreasoning,
  • will-less,
  • at first glance,
  • on the spot,
  • Autoschediastic,
  • toss off,
  • any old way,
  • impromptu,
  • toss out,
  • trial-and error,
  • by seat of one's pants,
  • off top of head,
  • impulsive,
  • unscripted,
  • on impulse,
  • Driftless,
  • Improvisatory,
  • by ear,
  • unaimed,
  • ad lib,
  • unintended,
  • random,
  • involuntary,
  • on-the-spot,
  • IMPROV,
  • shot from the hip,
  • uncalculated,
  • Unmeant,
  • unrealized,
  • thought out loud,
  • undesigned,
  • tossed out,
  • second-nature,
  • reflexive,
  • undevised,
  • Improviso,
  • instinctive,
  • all over the map,
  • unthinking,
  • hit-or-miss,
  • not on purpose,
  • off-the-cuff,
  • tossed off,
  • serendipitous,
  • Objectless,
  • dashed off,
  • brutish,
  • haphazard,
  • extemporaneous,
  • off the cuff,
  • unintentional,
  • Irreflective,
  • extemporary,
  • Designless.
  •random (adjective)
  • more objectless,
  • most driftless,
  • spotest,
  • most objectless,
  • spoter,
  • un aimed,
  • un-aimed,
  • most unaimed,
  • more unaimed,
  • more driftless.
  •snappy (adjective)
  • most harefooted,
  • more harefooted,
  • harefooted.
  •spur-of-the-moment (adjective)
  • spur of the moment.
  •unconscious (adjective)
  • most unrealized,
  • re pressed,
  • in-attentive,
  • more unrealized,
  • more subliminal,
  • un-deliberate,
  • re-pressed,
  • un conscious,
  • most repressed,
  • un-aware,
  • more undeliberate,
  • sub liminal,
  • most suppressed,
  • most undeliberate,
  • sub-conscious,
  • sub-liminal,
  • more repressed,
  • un realized,
  • un-conscious,
  • un-realized,
  • un deliberate,
  • un aware,
  • more suppressed,
  • most subliminal,
  • sub conscious.
  •undevised (adjective)
  • un-devised,
  • un devised.
  •unguarded (adjective)
  • unalert,
  • unwatchful,
  • unvigilant,
  • Uncircumspect.
  •unintended (adjective)
  • un-intended,
  • un intended.
  •unintentional (adjective)
  • un-intentional,
  • un intentional.
  •unmeant (adjective)
  • un-meant,
  • un meant.
  •unthinking (adjective)
  • in sensitive,
  • in delicate,
  • more brutish,
  • un-thinking,
  • most brutish,
  • napping,
  • un-tactful,
  • in-sensitive,
  • un reasoning,
  • most blundering,
  • most napping,
  • un thinking,
  • un-reasoning,
  • more unreasoning,
  • more napping,
  • in-delicate,
  • un tactful,
  • most unreasoning,
  • more blundering.

• a. & adv.

  •impromptu (adjective, adverb)
  • un scripted.

• n.

  •
  • by accident,
  • coincidental,
  • arbitrary.
  •
  • planned.

• Other synonyms:

  •
  • accidental.
  •
  • reflex,
  • automatic.
  •natural
  • unstudied.
  •Other relevant words (noun):
  • not deliberate,
  • Uncontemplated,
  • unplanned,
  • unorganized,
  • lucky,
  • shiftless,
  • Unpurposed,
  • snap,
  • Open-hearted,
  • emotional,
  • ill-advised,
  • unhatched,
  • advanced,
  • gut,
  • outspoken,
  • natural,
  • unguarded,
  • untimely,
  • ingenuous,
  • undeceitful,
  • overhasty,
  • last-minute,
  • happy-go-lucky,
  • tripped up,
  • heedless,
  • unaware,
  • unguided,
  • forthright,
  • precocious,
  • taken by surprise,
  • Inexpectant,
  • pick-up,
  • fluky,
  • unheedful,
  • Unarranged,
  • Undeliberated,
  • madcap,
  • unlucky,
  • scratch,
  • undeceiving,
  • unordered,
  • Indeliberate,
  • blind,
  • upfront,
  • immediate,
  • Unbegun,
  • unequivocal,
  • chance,
  • improvise,
  • unreflective,
  • mindless,
  • unprimed,
  • open,
  • far ahead,
  • unforeseeable,
  • unmade,
  • rushed,
  • frank,
  • undirected,
  • Unconcocted,
  • uncontrolled,
  • rough,
  • unwilled,
  • easy,
  • unsophisticated,
  • taken aback,
  • unannounced,
  • adventitious,
  • forward,
  • Purposed,
  • Unmanufactured,
  • plain-speaking,
  • unwitting,
  • uncontrived,
  • occasional,
  • caught off balance,
  • half-baked,
  • stray,
  • mechanical,
  • surprised,
  • unadvised,
  • incidental,
  • candid,
  • devil-may-care,
  • unexpected,
  • thriftless,
  • insensitive,
  • unprepared,
  • Unthrifty,
  • spur-of-the-moment,
  • straight,
  • indiscriminate,
  • Improvisate,
  • deaf,
  • unanticipated,
  • fortuitous,
  • sincere,
  • hurried,
  • truthful,
  • unpredictable,
  • rough-and-ready,
  • Plain-spoken,
  • artless,
  • Oversoon,
  • snappy,
  • uncalculating,
  • unspecified,
  • unthought-of,
  • unaffected,
  • non-specific,
  • honest,
  • oblivious,
  • previous,
  • guileless,
  • uncontrollable,
  • Unreasoned,
  • unready,
  • reckless,
  • direct,
  • Extemporized,
  • aleatory,
  • above-board,
  • conditioned,
  • improvident,
  • informal,
  • straightforward,
  • half-cocked,
  • too early,
  • caught short,
  • unspecific,
  • unlooked-for,
  • precipitate,
  • instant,
  • too soon,
  • blunt,
  • premature,
  • unconscious,
  • indefinite,
  • offhanded,
  • unconstrained,
  • subconscious,
  • sudden,
  • improvisational,
  • makeshift,
  • ill-devised,
  • caught napping,
  • careless,
  • foolhardy,
  • quick,
  • plain,
  • unmatured,
  • ad-lib,
  • voluntary,
  • unforeseen,
  • wild,
  • incautious,
  • unripe,
  • uncrystallized.

Antonyms for Unpremeditated:

• adj.

  • all
    premeditated.
  • Other antonyms:
    studied, prepared, prescribed, inevitable, elaborated, predestined, predetermined, certain, Prepense, willful, expected, knowing, unforced, aforethought, sure, read, foreseeable, calculated, Rehearsed, foreordained, predictable, preordained, destined, written, considered, fixed, volunteer, foreseen, premeditative.