Synonyms of ad hoc

ad hoc

adjective

as in impromptu

made or done without previous thought or preparation

upon learning that it was her birthday, we had an ad hoc celebration right there in the restaurant

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of ad hoc

Earlier this year, Dutra said during a board meeting his ad hoc committee considered adding a transit rider to the board. — Steve Scauzillo, Daily News, 16 July 2026

Second, Northwestern assigned an ad hoc committee to investigate me; but, after six months of investigation, the committee exonerated me, recommended no punishment and affirmed my right to academic freedom. — Literary Hub, 14 July 2026

Conversations resurfaced in 2020 when an ad hoc committee was formed, soliciting interest from local agencies, like the El Dorado Hills Fire Department and El Dorado Local Agency Formation Commission, to form a working group. — Corey Schmidt, Sacbee.com, 10 July 2026

The system is governed by ad hoc agreements among collectors. — Donald Keough, Christian Science Monitor, 6 July 2026

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