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

In August, an ad hoc committee made up of former MMSD commissioners recommended Jacobs, which outscored and underbid Veolia. — Mary Spicuzza, jsonline.com, 4 Sep. 2026

College football thrives on seemingly ad hoc approaches to program building. — Pete Sampson, New York Times, 3 Sep. 2026

But these are ad hoc projects, not a coordinated strategy involving tariffs, regulation, and pooled resources to create a true united front against China’s industrial onslaught. — Andy Browne, semafor.com, 1 Sep. 2026

The state also had to use ad hoc estimates to pay health care providers. — Renee Anderson, CBS News, 27 Aug. 2026

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