いつまで経たっても

Meanings

1

no matter how much time passes

Used to express that something remains unchanged or does not happen despite a long time passing. Often followed by a negative or continuing state.

いつまで経たっても返へん事じが来こない。
No matter how much time passes, I don't get a reply.
彼かれはいつまで経たっても子こ供どものままだ。
No matter how much time passes, he remains a child.