Plural of damndest, or uses of the term damndest as a countable noun; multiple instances or examples of extreme or ultimate efforts.
Nominalization of the superlative adjective 'damndest' by treating it as a noun and adding the plural -s. This represents a creative grammatical shift.
It's unusual to pluralize intensifiers like this, but 'damndests' appears in contexts where you're describing multiple all-out efforts or extreme attempts—it shows how living languages constantly bend grammatical rules creatively.
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