Synonyms of impromptu

impromptu 1 of 3

adjective

im-ˈpräm(p)-(ˌ)tü 

as in improvised

made or done without previous thought or preparation

our dinner guest thanked us with an impromptu song

Synonyms & Similar Words

• improvised
• improvisational
• spontaneous
• spur-of-the-moment
• unauthorized
• extemporaneous
• unprepared
• unrehearsed
• unplanned
• extemporary
• extempore
• informal
• automatic
• off-the-cuff
• unpremeditated
• ad hoc
• unstudied
• offhand
• unconsidered
• snap
• impulsive
• offhanded
• ad-lib
• down and dirty
• unscripted
• casual
• instinctive
• involuntary
• ill-advised
• cursive
• half-baked
• half-cocked

Antonyms & Near Antonyms

• prepared
• planned
• rehearsed
• premeditated
• deliberate
• intentional
• considered
• intended
• premeditative

impromptu

2 of 3

noun

as in improvisation

something that is performed, made, or done without preparation

although five different lines had been written, the best choice turned out to be an impromptu from the tired actor himself

Synonyms & Similar Words

• improvisation
• improv
• ad-lib
• extemporization
• innovation
• concoction
• creation
• invention
• contrivance
• wrinkle

Antonyms & Near Antonyms

• bit
• drill
• routine

impromptu

3 of 3

adverb

as in spontaneously

Related Words

• spontaneously
• haphazardly
• automatically
• abruptly
• impulsively
• recklessly
• suddenly
• impetuously
• offhand
• hurriedly
• offhandedly
• headfirst
• glancingly
• thoughtlessly
• headily
• hastily
• impatiently
• rashly
• hotheadedly
• cursorily
• precipitously
• headlong
• hotfoot
• precipitately
• pell-mell

Dissimilar Words

• deliberately
• designedly
• tentatively
• studiedly
• circumspectly
• hesitantly
• leisurely
• slowly
• haltingly
• hesitatingly
• calculatingly
• falteringly

Example Sentences

Recent Examples of impromptu

Adjective

In Milan, and elsewhere in Italy, there’s an abundance of gourmet stores selling prepared foods that allow everyone, including visitors without kitchens, the ability to serve an exquisite, impromptu meal. — Emma Bocchi, Vogue, 21 Sep. 2026

There is always an excuse for an impromptu barbecue, either with meat or, even better, fresh seafood; almost every group of friends here has at least one good fisherman. — Chadner Navarro, Condé Nast Traveler, 10 Sep. 2026

These impromptu scrapes have no communication value — unlike community scrapes. — Josh Honeycutt, Outdoor Life, 10 Sep. 2026

After leaving to get drinks and take an impromptu trip to Dave & Buster’s, Thiele and the rest of his group returned to the airport nine hours after the initial diversion to get on a new flight. — Daysia Tolentino, Entertainment Weekly, 10 Sep. 2026

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