even if; even though; despite ~
Even if, even though, despite; concessive pattern used to emphasize that something holds true regardless of a stated condition or status.
This is a formal, literary pattern meaning 'even if' or 'even though', but it carries a stronger sense of 'no matter that it is X, still...'. It is often used to acknowledge a fact or status that would normally suggest one thing, then state a contradiction or exception. For example, 彼が上司といえども、間違いは指摘すべきだ means 'Even if he is my boss, I should point out his mistakes.' The pattern stresses the force of the second clause despite the first.
In speech, it is rarely heard; it belongs to written language, formal speeches, or rhetorical statements. When used in conversation, it can sound pompous or dramatic. It can also be used with nouns to mean 'even someone like X' or 'even something like X', often followed by a negative or a surprising outcome.
Note the nuance: it is not merely 'although' but suggests 'even granting that', so the second clause often expresses something that is not expected given the first clause. It is N1 level and common in news, essays, and legal documents.