Added 8 October 2026
impromptu
/ɪmˈpɹɒmp.t(j)u/ noun
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about impromptu at Wordnik → Where our words come from →
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An extemporaneous speech or remark.
a witty impromptu must not sound premeditated
- A short musical passage that seems to have been made spontaneously without advance preparation.
adjective
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With little or no preparation or forethought.
his ad-lib comments showed poor judgment
adverb
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Without advance preparation.
he spoke ad lib