damned‧est /ˈdæmdəst, ˈdæmdɪst/
adjective spoken not polite1. do/try your damnedest to try very hard to do something:
I’ll do my damnedest to fix it, but I can’t promise anything.2. [only before noun] used to emphasize that something is unusual, surprising etc:
It was the damnedest thing you ever saw! [TahlilGaran] Dictionary of Contemporary English ▲