What are the best answers for “a performance given extempore without planning or preparation”?

extemporisation, extemporization, improvisation.

How many letters does the top answer for “a performance given extempore without planning or preparation” have?

The most common answer is extemporisation (15 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

extemporisation 15 letters wn-def

a performance given extempore without planning or preparation

extemporization 15 letters wn-def

a performance given extempore without planning or preparation

improvisation 13 letters wn-def

a performance given extempore without planning or preparation