ad hoc

ad hoc

adjective

Definition of AD HOC

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 ad hoc, ad-lib, down and dirty, extemporary, extempore, impromptu, improvisational, improvised, offhand, offhanded, off-the-cuff, snap, spur-of-the-moment, unconsidered, unplanned, unpremeditated, unprepared, unrehearsed, unstudied

Related Words unscripted; automatic, impulsive, instinctive, involuntary, spontaneous; casual, cursive, informal, unauthorized; half-baked, half-cocked, ill-advised

Near Antonyms deliberate, intended, intentional

Antonyms considered, planned, premeditated, premeditative, prepared, rehearsed