The impromptu performance received a standing ovation.
impromptu meeting
Frequency:
50
%
They had an impromptu meeting to discuss the project.
impromptu trip
Frequency:
40
%
We decided to take an impromptu trip to the beach.
Idiomatic Expressions for impromptu
Phrase: impromptu performance
Meaning: a performance that is done spontaneously and without prior planning
Usage: The band decided to do an impromptu performance at the park, much to the delight of the audience.