〜といえども

Meaning

Expresses strong concession, "even if it is ~." A stiff, written-style expression stating that even such a position or case is no exception. More formal than 「〜とはいえ」.

Examples

どんなに優秀な専門家といえども、判断を誤ることはある。 No matter how excellent an expert may be, they can still make errors in judgment.
いかに親しい間柄といえども、守るべき礼儀はある。 However close the relationship, there are manners that should be observed.
一日といえども、練習を怠るわけにはいかない。 Not even a single day can be spent neglecting practice.