Lack of sincerity or good faith; an attitude or response that shows insincerity or disregard for the other party.
顧客対応の不誠意が原因でクレームが増えた。
Insincere customer service led to an increase in complaints.
契約交渉で相手の不誠意が明らかになった。
The other party's bad faith became apparent during contract negotiations.
謝罪が形式的で不誠意に感じられた。
The apology felt formal and insincere.