Synonyms of 'spontaneous' in British English
1 (adjective)
Definition
not planned or arranged
I joined in the spontaneous applause.
Synonyms
Opposites
planned
, arranged
, calculated
, forced
, studied
, mannered
, deliberate, orchestrated
, contrived
, premeditated
, stage-managed
, prearranged
, preplanned
2 (adjective)
Definition
occurring through natural processes without outside influence
a spontaneous reaction
Synonyms
reflex
I turned to look inside the house in a reflex action.
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Additional synonyms
in the sense of extempore
Definition
without planning or preparation
He made some heated and extempore remarks.
Synonyms
unplanned,
off-the-cuff (informal),
ad lib,
extemporaryin the sense of free
a confidential but free manner
Synonyms
open,
easy,
lax,
unforced,
unceremoniousin the sense of impromptu
Definition
without planning or preparation
They put on an impromptu concert for the visitors.
Synonyms
off-the-cuff (informal),
extemporized
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Thesaurus for spontaneous from the Collins English Thesaurus
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