- I(New American Roget's College Thesaurus)adj. instinctive, automatic, involuntary; extemporaneous, uninhibited, unforced, natural. See impulse, will, freedom.II(Roget's IV) modif.Syn. involuntary, instinctive, unbidden, unplanned, impromptu, ad-lib*, casual, unintentional, impulsive, offhand, automatic, unforced, natural, inevitable, irresistible, unavoidable, resistless, unwilling, unconscious, uncontrollable.Ant. deliberate*, willful, intended.Syn.- spontaneous applies to that which is done so naturally that it seems to come without prompting or premeditation [ a spontaneous demonstration ] ; impulsive applies to that which is prompted by some external incitement or sudden inner inclination rather than by conscious rational volition [ an impulsive retort ] ; instinctive suggests an immediate, unwilled response to a stimulus, as if prompted by some natural, inborn tendency [ he took an instinctive liking to her ] ; involuntary refers to that which is done without thought or volition, as a reflex action [ an involuntary scowl, an involuntary flicker of the eyelid ] ; automatic suggests an unvarying, machinelike reaction to a given stimulus or situation [ an automatic response ]III(Roget's 3 Superthesaurus) a.unrehearsed, off the cuff, extemporaneous, unprepared, spur of the moment, unplanned, impulsive, impromptu, *off the top of one's head, ad-lib, unpremeditated, reflexive, natural, instinctual.ANT.: planned, premeditated, rehearsed, prepared, unnaturalIV(Roget's Thesaurus II) adjective 1. Acting or happening without apparent forethought, prompting, or planning: automatic, impulsive, instinctive, involuntary, reflex, unpremeditated. See PLANNED. 2. Done by one's own choice: free, uncompelled, unforced, volitional, voluntary, willful. See WILLING. 3. Unconstrained by rigid standards or ceremony: casual, easy, easygoing, informal, natural, relaxed, unceremonious, unrestrained. Informal: laid-back. See PLAIN, TIGHTEN.
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Spontaneous — means a self generated event, typically requiring no outside influence or help.The word spontaneous may also refer to:* Spontaneous abortion * Spontaneous bacterial peritonitis * Spontaneous combustion * Spontaneous emission * Spontaneous fission … Wikipedia
Spontaneous — Spon*ta ne*ous (sp[o^]n*t[=a] n[ e]*[u^]s), a. [L. spontaneus, fr. sponte of free will, voluntarily.] 1. Proceeding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without… … The Collaborative International Dictionary of English
spontaneous — 1 Spontaneous, impulsive, instinctive, automatic, mechanical in application to persons or their movements, acts, and utterances mean acting or activated without apparent thought or deliberation. Spontaneous can describe whatever is not affected… … New Dictionary of Synonyms
spontaneous — I adjective discretional, discretionary, elective, extemporal, extemporaneous, extemporary, extempore, free, free willed, impetuous, impromptu, improvisatorial, improvised, impulsive, indeliberate, independent, natural, optional, rash, self… … Law dictionary
spontaneous — 1650s, from L.L. spontaneus willing, of one s free will, from L. (sua) sponte of one s own accord, willingly; of unknown origin. Related: Spontaneously. Earliest use is of persons and characters. Spontaneous combustion first attested 1795.… … Etymology dictionary
spontaneous — [spän tā′nē əs] adj. [LL spontaneus < L sponte, of free will < IE base * (s)pen(d) , to pull > SPIN] 1. acting in accordance with or resulting from a natural feeling, impulse, or tendency, without any constraint, effort, or premeditation … English World dictionary
spontaneous — [adj] impulsive, willing ad lib*, automatic, break loose, casual, down, extemporaneous, extempore, free, free spirited, from the hip*, impetuous, impromptu, improvised, inevitable, instinctive, involuntary, irresistible, natural, offhand, off the … New thesaurus
spontaneous — ► ADJECTIVE 1) performed or occurring as a result of an unpremeditated impulse and without external stimulus. 2) open, natural, and uninhibited. 3) (of a process or event) occurring without apparent external cause. 4) Biology (of movement or… … English terms dictionary
spontaneous — 01. The crowd burst into [spontaneous] applause when the Queen appeared on the balcony. 02. Thousands of people [spontaneously] poured into the streets of the capital to celebrate after the victory of the national soccer team in the World Cup. 03 … Grammatical examples in English
spontaneous — adjective 1) a spontaneous display of affection Syn: unplanned, unpremeditated, unrehearsed, impulsive, impetuous, unstudied, impromptu, spur of the moment, extempore, extemporaneous; unforced, voluntary, unconstrained, unprompted, unbidden,… … Thesaurus of popular words
spontaneous — [[t]spɒnte͟ɪniəs[/t]] 1) ADJ GRADED Spontaneous acts are not planned or arranged, but are done because someone suddenly wants to do them. Diana s house was crowded with happy people whose spontaneous outbursts of song were accompanied by lively… … English dictionary