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noun

damnedest

noun
1
The greatest effort someone is capable of making.
"He did his damnedest to fix the leak before the guests arrived."
"Just do your damnedest and we'll see how it goes."

How to Use Damnedest

Learner’s notes

In plain EnglishYour absolute best effort — as in "try your damnedest."

When to use it

Informal; treat like a stronger version of "best."

Common pairings
do your damnedest try your damnedest
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He did his _____ to fix the leak before the guests arrived.

Etymology

Superlative form of "damned," built the same way "biggest" comes from "big" — damned plus the ending -est.

Definitions: FreeDict original editorial