Grammar › N1 · 04 Concession and contrast
〜にしても: even if; granted that
N1 · 04 Concession and contrast
Says that even if X is accepted, the speaker still has a complaint or opinion.
Plain clause or noun + にしても. A little more spoken than にせよ. Often shows criticism: 忙しいにしても. Also in pairs: AにしてもBにしても.
Examples
いくら忙しいにしても、連絡くらいはしてほしい。
However busy you are, I'd like you to at least get in touch.
冗談にしても、言っていいことと悪いことがある。
Even as a joke, there are things you can and cannot say.