5
speedy(adjective, casual, quick, hasty, swift)
4
brief(adjective, present, short, casual, limited)
4
derelict(adjective, slow, careless, indifferent, thoughtless)
4
hastily(adverb, haste)
4
improvident(adjective, careless, careful, casual, rash)
4
loose(careless, casual, sloppy, disordered, inexact)
4
precipitant(adjective, careful, rash)
4
precipitate(adjective, careful, quick, rash, oblivious)
4
slap
4
slap-bang(adverb, haste)
4
summary(adjective, slight, detail, limited, trivial)
4
swift(adjective, casual, quick, speedy, hasty)
4
temporary
4
unheedful(adjective, careless, indifferent, unconcerned, sloppy)
3
bumbling(adjective, neglectful)
3
disorganized(adjective, careless, casual, disordered, untidy)
3
disregardful(adjective, slow, careless, indifferent, casual)
3
fleeting(adjective, present, short, limited, quick)
3
hit-and-miss(adjective, neglectful)
3
hit-or-miss(careless, casual, crude, substitute, haphazard)
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APASmart Define. (2016). slapdash thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/slapdash/thesaurus/synonyms
ChicagoSmart Define. 2016. "slapdash thesaurus" https://smartdefine.org/slapdash/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, slapdash thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/slapdash/thesaurus/synonyms>.
MLASmart Define. "slapdash thesaurus" 1 March 2016. Web. 22 September 2026. <https://smartdefine.org/slapdash/thesaurus/synonyms>