〔あらっぽくて大ざっぱな〕crude, rough;〔不注意な〕careless
- 粗雑な絵だ
- It's a crude [roughly-executed] painting.
- こんな粗雑な計画では成功しないよ
- You won't succeed with 「such a crude plan [a plan like that] ― it's full of holes.
- ボタンのつけ方が粗雑だ
- The buttons are sewn on carelessly.
- 頭の粗雑な男ではこの仕事には役に立たない
- 「A loose thinker [A man incapable of careful reasoning] is of no use on this job.