adj · adv · noun · 8 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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UK:/ɪmˈpɹɒmptju/
Southern-England:Recorded audio is listed in the source snapshot.
US:/ɪmˈpɹɑmpt(j)u/
CMU ARPABET:IH2 M P R AA1 M P T UW0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Improvised; without prior preparation, planning or rehearsal.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
The party began with an impromptu rendition of 'Happy Birthday'.
an impromptu speech
Meaning relationships
Synonyms: extemporaneous, extempore, ad lib, unplanned
Antonyms: none provided
2
adv
Meaning 2
Extemporaneously; without prior preparation, planning, or rehearsal.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
happened impromptu
was done impromptu
Meaning relationships
Synonyms: ex tempore, extempore, ad lib
Antonyms: none provided
3
noun
Meaning 3
A short musical composition for an informal occasion often with the character of improvisation and usually to be played solo.
Definition source: English Wiktionary via Wiktextract
Topics: entertainment, lifestyle, music
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
Any composition, musical or otherwise, that is created on the spot without preparation.
Definition source: English Wiktionary via Wiktextract
Usage: broadly
No example sentence was provided for this meaning.