| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | tending to act without thought |
| Synonyms: | abrupt, ad-lib, automatic, careless, devil-may-care, emotional, extemporaneous, flaky*, gone off deep end, hasty, headlong, hot-and-cold, impetuous, instinctive, intuitive, involuntary, jumping the gun, mad, offhand, passionate, precipitate, quick, rash, spontaneous, sudden, swift, unconsidered, unexpected, unmeditated, unpredictable, unpremeditated, unprompted, up-and-down, violent, winging it |
| Notes: | a compulsive eater is compelled by an exterior force to eat and eats constantly; an impulsive eater is impelled (has an impulse) to eat, occurring sporadically, and eats only from time to time |
| Antonyms: | cautious, considering, heedful, premeditative, thoughtful, wise |
| Main Entry: | involuntary |
| Part of Speech: | adjective |
| Definition: | automatic; not done willingly |
| Synonyms: | automatic, begrudging, blind, compulsory, conditioned, forced, grudging, habitual, impulsive, instinctive, instinctual, knee-jerk, obligatory, reflex, reflexive, reluctant, spontaneous, uncalculated, unconscious, uncontrolled, unintended, unintentional, unmeditated, unpremeditated, unprompted, unthinking, unwilling, unwitting, will-less |
| Antonyms: | conscious, intentional, unforced, voluntary |
| 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: | unasked |
| Part of Speech: | adjective |
| Definition: | voluntary |
| Synonyms: | arrogant, gratuitous, impudent, not asked, of one's own accord, overbearing, presumptuous, spontaneous, supererogatory, unbidden, uncalled-for, undemanded, undesired, uninvited, unprompted, unrequested, unsought, unwanted, unwelcome, voluntarily, willing, without prompting |
| Antonyms: | asked, invited, involuntary, solicited |
| Main Entry: | instinctual |
| Part of Speech: | adjective |
| Definition: | instinctive |
| Synonyms: | accustomed, by seat of one's pants, congenital, habitual, impulsive, inborn, ingrained, inherent, innate, intrinsic, intuitional, intuitive, involuntary, knee-jerk, mechanical, native, natural, normal, regular, rooted, second-nature, spontaneous, typical, unlearned, unmeditated, unpremeditated, unprompted, unthinking, visceral |