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

Synonyms & Similar 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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of impromptu

Adjective

The sight of unused substitute Moreno, encouraged by his team-mates, stepping forward to do an impromptu jig by the side of the pitch was one of them. —Paul Taylor, The Athletic, 18 Mar. 2025

Gone are the days when a campus was all about late-night study sessions, dorm parties, and impromptu group projects. —Maja Zelihic, Forbes, 15 Mar. 2025

Some flocked to churches in the majority Catholic country to attend impromptu mass to commemorate the thousands of victims of his drug war, seeing the move as a first step towards overdue justice. —Kathleen Magramo, CNN, 12 Mar. 2025

Its iconic veranda with crosshatch marble floors host impromptu meetings; its stone staircase allows for more than one dramatic entrance. —Hannah Martin, Architectural Digest, 10 Mar. 2025

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