na-adjective
hypocritical
Describes a person, action, or attitude that pretends to be virtuous while hiding selfish motives. Often used critically.
彼の偽善的な態度にはうんざりだ。
I'm fed up with his hypocritical attitude.
環境保護を訴える企業が裏で汚染を続けるのは偽善的だ。
It's hypocritical for a company to advocate environmental protection while continuing to pollute behind the scenes.