impromptu
/ɪmˈpɹɒmptju/adjective
Done or made without planning or preparation.
Example sentences
- “The band gave an impromptu concert in the parking lot.”
- “We had an impromptu picnic when the sun came out.”
- “His impromptu speech at the wedding made everyone cry.”
Close in meaning to 'spontaneous' and 'off-the-cuff'. It usually comes before the noun: an impromptu visit, an impromptu meeting.