杜撰(ずさん)careless, sloppy, faulty, using unreliable sources (in a piece of writing), piece of writing with unreliable sources or many errors

Common

1. な-adjective, Noun

   1. 1.

      careless, sloppy, faulty

      Usually written using kana alone

2. Noun

   1. 2.

      using unreliable sources (in a piece of writing), piece of writing with unreliable sources or many errors