ずさん Japanese meaning | Kotomora彼のずさんな管理が問題を引き起こした。
His careless management caused the problem.
Usage patterns
〈事〉がずさんだ[something] is sloppy/carelessly done
The management of this construction project was sloppy.
出典がずさんだthe sourcing (of a piece of writing) is unreliable/sloppy
This paper's sourcing is so unreliable that it can't be trusted.
ずさんな〈事〉careless/sloppy [thing]
Sloppy accounting practices came to light.
N1
杜撰 describes careless, sloppy work or planning, the opposite of the dependable, step-by-step nature of 着実.
杜撰 describes sloppy, careless work with many oversights, the opposite of the meticulous thoroughness of 周到.