An early recorded use of slapdash comes from 17th-century British poet and dramatist John Dryden, who used it as an adverb in his play The Kind Keeper. "Down I put the notes slap-dash," he wrote. The Oxford English Dictionary defines this sense, in part, as "with, or as with, a slap and a dash," perhaps suggesting the notion of an action (such as painting) performed with quick, imprecise movements. The adjective slapdash is familiar today describing something done in a hasty, careless, or haphazard manner.
the police department's investigation of the charges against the mayor was slapdash and not very thorough
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The slapdash euphoria that electrified 2024’s REACTOR comes in small doses here.—Kieran Press-Reynolds, Pitchfork, 13 Feb. 2026 Their design was unpolished, even primitive, seemingly to convey a sense of slapdash amateurishness.—Gary Baum, HollywoodReporter, 11 Feb. 2026 Courts have barred similarly slapdash efforts to appoint a slate of Trump-friendly prosecutors, harass law firms the president dislikes, withhold federal funding from a range of institutions, and deploy the National Guard to peaceful cities despite opposition from blue-state governors.—Quinta Jurecic, The Atlantic, 20 Jan. 2026 The initiative felt slapdash, and open to divergent interpretations.—Joshua Yaffa, New Yorker, 27 Nov. 2025 See All Example Sentences for slapdash