US /ɪmˈprɑmptu/ UK /ɪmˈprɒmptjuː/
adj adv noun

Meanings

  1. 1
    adj

    done without preparation; spontaneous

    She gave an impromptu speech that won the room over.

Thesaurus

Synonyms
1 adj · done without preparation;... spontaneousimprovisedextemporaneousunrehearsedoffhandunpreparedad-lib
Opposites
Word family
Related forms prompt

Etymology

From French impromptu, from Latin in promptu ('in readiness, at hand'), from the ablative of promptus ('readiness'), from promere ('to bring forth'), from pro- ('forth') + emere ('to take').

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