Darndest (adjective)
alternative spelling of darnedest
Darndest (noun)
alternative spelling of darnedest
Darnedest (adjective)
damnedest.
Darnedest (noun)
The maximum or the best possible.
“I did my darnedest to stay awake.”
Wiktionary
Darnedest (adjective)
used to emphasize the surprising nature of something
“people say the darnedest things when they’ve got an audience”
Oxford Dictionary