Laziness; shirking duties — behaving sloppily or neglecting work.
彼は横着して掃除を全然しない。
He shirks his duties and doesn't clean at all.
横着をして短い方法で済ませると後で困ることになる。
If you take the lazy shortcut, you'll have trouble later.
仕事で横着をすると信用を失う。
Being lazy at work will cost you credibility.
Impudent or brazen behavior; insolence — acting shamelessly or with audacity.
彼の横着な言い方に皆が不快感を示した。
Everyone showed displeasure at his brazen way of speaking.
そんな横着は許されない。
That kind of impudence is unacceptable.
横着な振る舞いを改めるように注意された。
He was warned to stop his brazen behavior.