| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | unnecessary |
| Synonyms: | accidental, avoidable, fortuitous, futile, inappropriate, inessential, needless, nonessential, not required, optional, unessential, uninvited, unneeded, unrequired, unwanted, unwarranted, unwelcome, useless |
| 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: | unnecessary |
| Part of Speech: | adjective |
| Definition: | not required |
| Synonyms: | accidental, additional, avoidable, beside the point, casual, causeless, chance, dispensable, excess, exorbitant, expendable, extraneous, extrinsic, fortuitous, futile, gratuitous, haphazard, inessential, irrelevant, lavish, needless, noncompulsory, nonessential, optional, prodigal, profuse, random, redundant, supererogatory, superfluous, surplus, uncalled-for, uncritical, undesirable, unessential, unneeded, unrequired, useless, wanton, worthless |
| Antonyms: | indispensable, necessary, needed, required |
| Main Entry: | unintentional |
| 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: | deliberate, intended, intentional, planned |
| Main Entry: | unplanned |
| Part of Speech: | adjective |
| Definition: | not planned |
| Synonyms: | accidental, adventitious, aleatory, fortuitous, haphazard, impromptu, random, spontaneous, undesigned, unexpected, unintended, unintentional |
| Antonyms: | planned |
| Main Entry: | adventitious |
| Part of Speech: | adjective |
| Definition: | from outside |
| Synonyms: | accidental, casual, extrinsic, foreign, fortuitous, nonessential |
| Main Entry: | inessential |
| Part of Speech: | adjective |
| Definition: | unnecessary |
| Synonyms: | accidental, additional, avoidable, beside the point, casual, causeless, chance, dispensable, excess, exorbitant, expendable, extraneous, extrinsic, fortuitous, futile, gratuitous, haphazard, irrelevant, lavish, needless, noncompulsory, nonessential, optional, prodigal, profuse, random, redundant, supererogatory, superfluous, surplus, uncalled-for, uncritical, undesirable, unessential, unneeded, unrequired, useless, wanton, worthless |
| Main Entry: | provisory |
| Part of Speech: | adjective |
| Definition: | conditional |
| Synonyms: | codicillary, contingent, depending on, fortuitous, granted on certain terms, guarded, iffy, incidental, inconclusive, limited, modified, not absolute, obscure, provisional, qualified, relative, reliant, relying on, restricted, restrictive, subject to, tentative, uncertain, with grain of salt, with reservations, with strings attached |
| Main Entry: | supervenient |
| Part of Speech: | adjective |
| Definition: | incidental |
| Synonyms: | accidental, accompanying, adscititious, adventitious, ancillary, attendant, by-the-way, casual, chance, circumstantial, coincidental, concomitant, concurrent, contingent, contributing, contributory, fluke, fortuitous, irregular, nonessential, occasional, odd*, random, secondary, subordinate, subsidiary |