| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | accidental |
| Synonyms: | careless, chance, feckless, heedless, irreflective, negligent, not on purpose, reckless, thoughtless, uncaring, unconcerned, undesigned, undevised, unheeding, unintended, unintentional, unmindful, unplanned, unpremeditated, unthinking, unthought, unwitting |
| Antonyms: | advertent, attentive, deliberate, intentional, planned |
| Main Entry: | purposeless |
| Part of Speech: | adjective |
| Definition: | useless, insignificant |
| Synonyms: | aimless, designless, desultory, drifting, empty, feckless, floundering, fustian, goalless, good-for-nothing, haphazard, hit-or-miss, indiscriminate, irregular, meaningless, motiveless, needless, nonsensical, pointless, purportless, random, senseless, uncalled for, undirected, unhelpful, unnecessary, unplanned, unprofitable, unpurposed, vacuous, wanton, worthless |
| Antonyms: | decided, deliberate, determined, planned, purposeful, significant, useful |
| Main Entry: | rambling |
| Part of Speech: | adjective |
| Definition: | sprawling, spread out |
| Synonyms: | at length, covering, gangling, here and there, irregular, random, scattered, spreading, straggling, strewn, trailing, unplanned |
| Antonyms: | direct, straight |
| Main Entry: | random |
| Part of Speech: | adjective |
| Definition: | haphazard, chance |
| Synonyms: | accidental, adventitious, aimless, arbitrary, casual, contingent, designless, desultory, driftless, fluky, fortuitous, hit-or-miss, incidental, indiscriminate, irregular, objectless, odd, promiscuous, purposeless, slapdash, spot, stray, unaimed, unconsidered, unplanned, unpremeditated |
| Antonyms: | definite, methodical, particular, specific, systematic |
| Main Entry: | spontaneous |
| Part of Speech: | adjective |
| Definition: | impulsive, willing |
| Synonyms: | ad-lib, automatic, break loose, casual, down, extemporaneous, extempore, free, free spirited, from the hip, impetuous, impromptu, improvised, inevitable, instinctive, involuntary, irresistible, natural, off top of head, off-the-cuff, offhand, simple, unartful, unavoidable, unbidden, uncompelled, unconscious, unconstrained, uncontrived, uncontrolled, unforced, unintentional, unplanned, unpremediated, unprompted, unsophisticated, unstudied, up front, voluntary |
| Antonyms: | deliberate, intended, planned, premeditated |
| Main Entry: | unintentional/unintended |
| Part of Speech: | adjective |
| Definition: | not planned |
| Synonyms: | accidental, aimless, casual, chance, erratic, extemporaneous, fortuitous, haphazard, inadvertent, involuntary, purposeless, random, unconscious, undesigned, undevised, unexpected, unforeseen, unintended, unplanned, unpremeditated, unthinking, unthought, unwitting |
| Antonyms: | definite, deliberate, intended, intentional, planned |
| Main Entry: | unprepared |
| Part of Speech: | adjective |
| Definition: | not ready |
| Synonyms: | ad-lib, caught off guard, ill-considered, impromptu, improvised, napping, not prepared, off the cuff, off the top of one's head, offhand, played by ear, spontaneous, surprised, taken off guard, unaware, unexpected, unplanned, unready, unrehearsed, unschooled, unskilled, untrained, vulnerable, winged* |
| Main Entry: | unwitting |
| Part of Speech: | adjective |
| Definition: | without fully realizing |
| Synonyms: | accidental, aimless, chance, comatose, forgetful, haphazard, ignorant, inadvertent, incognizant, inconversant, innocent, involuntary, numb, oblivious, senseless, unacquainted, unaware, unconscious, undesigned, unfamiliar, uninformed, uninstructed, unintended, unintentional, unknowing, unmeant, unmindful, unplanned, unsuspecting, unthinking |
| Antonyms: | conscious, intentional, realizing, witting |
| Main Entry: | extemporaneous |
| Part of Speech: | adjective |
| Definition: | improvised |
| Synonyms: | ad hoc, ad-lib, automatic, autoschediastic, by ear, casual, expedient, extemporary, extempore, fake, free, immediate, impromptu, improv, improvisatory, improviso, informal, jamming, made-up, makeshift, offhand, on impulse, on-the-spot, snap, spontaneous, spur-of-the-moment, toss off, toss out, unplanned, unpremeditated, unprepared, unrehearsed, unstudied, winging it |
| Notes: | extemporaneous means 'prepared in advance and carried out with few or no notes' while impromptu means 'totally unprepared, performed on the spur of the moment' - but this distinction has been all but lost |
| Antonyms: | deliberate, planned, premeditated, prepared, rehearsed |