Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun impromptu

2 senses of impromptu

Sense 1
impromptu -- (an extemporaneous speech or remark; "a witty impromptu must not sound premeditated")
       => address, speech -- (the act of delivering a formal spoken communication to an audience; "he listened to an address on minor Roman poets")

Sense 2
impromptu -- (a short musical passage that seems to have been made spontaneously without advance preparation)
       => passage, musical passage -- (a short section of a musical composition)

Antonyms of adj impromptu

1 sense of impromptu

Sense 1
ad-lib, extemporaneous, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed -- (with little or no preparation or forethought; "his ad-lib comments showed poor judgment"; "an extemporaneous piano recital"; "an extemporary lecture"; "an extempore skit"; "an impromptu speech"; "offhand excuses"; "trying to sound offhanded and reassuring"; "an off-the-cuff toast"; "a few unrehearsed comments")

INDIRECT (VIA unprepared) -> prepared -- (made ready or fit or suitable beforehand; "a prepared statement"; "be prepared for emergencies")

Similarity of adj impromptu

1 sense of impromptu

Sense 1
ad-lib, extemporaneous, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed -- (with little or no preparation or forethought; "his ad-lib comments showed poor judgment"; "an extemporaneous piano recital"; "an extemporary lecture"; "an extempore skit"; "an impromptu speech"; "offhand excuses"; "trying to sound offhanded and reassuring"; "an off-the-cuff toast"; "a few unrehearsed comments")
       => unprepared (vs. prepared) -- (without preparation; not prepared for; "unprepared remarks"; "the shock was unprepared"; "our treaty makers approached their immensely difficult problems unprepared"- R.E.Danielson)

Synonyms of adv impromptu

1 sense of impromptu

Sense 1
ad lib, ad libitum, spontaneously, impromptu -- (without advance preparation; "he spoke ad lib")