Self-righteousness: an attitude of believing one's own views or actions are always right while disregarding others' opinions.
彼の独善はチームの雰囲気を悪くした。
His self-righteousness damaged the team's atmosphere.
独善にならないように、常に他人の意見を聞くことが大切だ。
To avoid becoming self-righteous, it's important to always listen to others' opinions.
あの政治家の独善的な発言が批判を招いている。
That politician's self-righteous remarks are drawing criticism.