54 entries under expression topic. ×

13
ad lib(adjective, idiom, adverb, free)
13
off the cuff(adjective, idiom, adverb, free)
6
ad hoc(adjective, idiom, free, unplanned)
6
ad libitum(adjective, idiom, adverb, informal)
2
by ear(adverb, free, offhand, unrehearsed)
2
from the hip(adjective, idiom, simple, natural)
2
off hand
2
off the hip(idiom, adverb, offhand, extemporaneous)
1
according to pleasure(idiom, adverb, informal, extemporize)
1
as one wishes(idiom, adverb, informal, extemporize)
1
at short notice
1
at will(adverb, informal, unplanned, extemporize)
1
break loose(adjective, simple, natural, casual)
1
caught off balance
1
caught off guard(idiom, unqualified, unsuspecting, unready)
1
dashed off(adjective, adverb, mock, affected)
1
free spirited(adjective, simple, natural, casual)
1
not prepared(unqualified, unsuspecting, unready)
1
off the top of head(idiom, adverb, free, unrehearsed)
1
off top of head(adjective, idiom, adverb, simple)
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APASmart Define. (2016). impromptu thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impromptu/thesaurus/synonyms
ChicagoSmart Define. 2016. "impromptu thesaurus" https://smartdefine.org/impromptu/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, impromptu thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impromptu/thesaurus/synonyms>.
MLASmart Define. "impromptu thesaurus" 28 January 2016. Web. 21 September 2026. <https://smartdefine.org/impromptu/thesaurus/synonyms>