spontaneous

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, unsolicited; informal off-the-cuff
Ant:
planned, calculated
2)

a spontaneous reaction to danger

Syn:
reflex, automatic, mechanical, natural, knee-jerk, involuntary, unthinking, unconscious, instinctive, instinctual, visceral; informal gut
Ant:
conscious, voluntary
3)

a spontaneous kind of person

Syn:
natural, uninhibited, relaxed, unselfconscious, unaffected, open, genuine, easy, free and easy; impulsive, impetuous
Ant:
inhibited
••
spontaneous, impromptu, improvised, impulsive, offhand, spontaneous, unpremeditated
If you're the kind of person who acts first and thinks about it later, your friends are likely to describe you as spontaneous, which means that you behave in a very natural way, without prompting or premeditation (a spontaneous embrace; a spontaneous burst of applause). Or they may call you impulsive, which has somewhat less positive connotations, suggesting someone who is governed by his or her own moods and whims without regard for others. Although impulsive behavior may be admirable (his impulsive generosity prompted him to empty his pockets), it is just as likely to be ugly or disruptive (impulsive buying; an impulsive temper). Offhand also has negative overtones, implying behavior that is spontaneous to the point of being cavalier or brusque (her offhand remarks offended them). Unpremeditated is a more formal term, often used in a legal context to describe an impulsive crime committed without forethought (unpremeditated murder). In the world of public speaking, an extemporaneous speech is one that is delivered without referring to a written text, although the speaker may have been aware that he or she would be called upon to speak, while an impromptu speech is one that the speaker was not expecting to give. Improvised is often used in the context of a musical or theatrical performance, suggesting a basic structure within which the performers are free to play in a spontaneous manner (by its very nature, jazz is improvised). But it has broader applications as well; in fact, anything that is devised on the spur of the moment may be described as improvised.

Thesaurus of popular words. 2014.

Synonyms:

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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 — [[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

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