Synonyms of improvised

improvised 1 of 2

adjective

as in impromptu

made or done without previous thought or preparation

stumbled through an improvised reply to an unexpected question at the press conference

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

improvised

2 of 2

verb

past tense of improvise

as in devised

to perform, make, or do without preparation

since the award was a complete surprise, I improvised an acceptance speech

Synonyms & Similar Words

• devised
• concocted
• extemporized
• faked
• ad-libbed
• manufactured
• clapped (together or up)
• invented
• hatched
• thought (up)
• contrived
• cooked (up)
• fabricated
• dashed (off)
• made up
• cobbled (together or up)

Antonyms & Near Antonyms

• prepared
• arranged
• laid
• considered
• studied
• contemplated
• readied
• practiced
• exercised
• pondered
• rehearsed

Example Sentences

Recent Examples of improvised

Adjective

Likewise, the respite afforded by the twin hydration breaks has also reduced the need for improvised periods of gentlemanly repose, which in turn has lessened the demand for the chilly spray. — Anthony Crupi, Sportico.com, 17 July 2026

Outside hospitals, temporary shelters and improvised morgues, relatives continue posting photographs and names of missing family members on social media, hoping someone might recognize them or provide information about their fate. — Antonio María Delgado, Miami Herald, 4 July 2026

An improvised rescue operation is searching for survivors after Venezuela’s historic earthquakes. — Hannah Jocelyn, New Yorker, 1 July 2026

This park has become an improvised relief hub, where donations move through a makeshift assembly line. — Tibisay Zea, Christian Science Monitor, 30 June 2026

The idea was that the actors would sign on and visit a chat room to solicit suggestions for the cast to create improvised comedy scenes. — Kelly Leonard, Forbes.com, 30 June 2026

Eventually, the rewrite and actors workshop rehearsal combined — a two-week period in which Jones, McCormick, Wilde, Rogen, Cruz, and Norton acted out, improvised scenes, and, most importantly, talked about characters. — Chris O'Falt, IndieWire, 24 June 2026

Víg had no prior experience composing for film, and the project – which relied heavily on documentary aesthetics and improvised performance – made for a steep learning curve. — Naman Ramachandran, Variety, 20 June 2026

Detectives who reviewed surveillance footage from the area along with evidence at the scene determined that the suspect used a rock to break a window and started fire using an improvised incendiary device, according to police. — Carlos E. Castañeda, CBS News, 17 June 2026

Verb

The musical is improvised based on your suggestions, creating hilarious lyrics, melodies and pure entertainment. — Hema Sivanandam, Mercury News, 20 July 2026

Whereas the Americans sought detailed advance planning, the Israelis demanded immediate military action, even though each step had to be improvised. — David D. Kirkpatrick, New Yorker, 20 July 2026

Could these poems have been improvised by singers drawing on a repertoire of formulae? — Literary Hub, 17 July 2026

The goal is to create a space that feels lived-in, not improvised. — Angelika Pokovba, Martha Stewart, 12 July 2026

Inspired by childhood memories of Margam, South Wales, the piece began life as a melody Hopkins improvised backstage at Liverpool Playhouse in 1963. — Jonathan Cohen, SPIN, 10 July 2026

Eugene Levy‘s fumbling birds and the bees talks comprise some of the funniest moments of American Pie — and most of them were improvised. — Gwen Ihnat, Entertainment Weekly, 9 July 2026

Documentation is minimal, and architecture is often improvised. — Oleg Lola, Forbes.com, 8 July 2026

To stay dry, the two improvised, finding child-size rain coats when the adult ones were sold out at a Target store. — Jason Rantala, CBS News, 28 June 2026