といえども

〜といえども is used to express concession:
even when a certain condition is true, the expected result does not happen or an opposite situation applies.

It is a very formal, classical-style expression, often used in:

• written Japanese

• speeches

• rules and principles

• proverbs and maxims

The tone is serious, objective, and authoritative.

Easy way to understand

Think of it as:

“Even if it is said that ~, still …”

or more naturally:

“No matter how true X is, Y still applies.”

Usage Notes

✔ Formal / literary expression
✔ Used to show strong contrast or exception
✔ Often expresses rules, principles, or general truths
✔ Common in written / official contexts

❌ Rare in casual conversation
❌ Sounds unnatural in emotional or personal speech