Impromptu meaning: Define impromptu

Define impromptu. impromptu synonyms, impromptu pronunciation, impromptu translation, English dictionary definition of impromptu. adj. 1. Prompted by the occasion rather than being planned in advance: an impromptu party. impromptu meaning , definition, what is impromptu : done or said without any preparation or ...: Learn more. Impromptu definition: made or done without previous preparation .. See examples of IMPROMPTU used in a sentence. An impromptu action is one that you do without planning or organizing it in advance . This afternoon the Palestinians held an impromptu press conference. The children put on an impromptu concert for the visitors.