damndest

adjective, superlative damned·est, damnd·est.

1. condemned or doomed, especially to eternal punishment: the wailing of damned souls.
2. detestable; loathsome: Get that damned dog out of here!
3. complete; absolute; utter: a damned nuisance; a damned fool.
4. Informal. extraordinary; amazing: It was the damnedest thing I’d ever seen.

noun

5. the damned, those condemned to suffer eternal punishment.

adverb

6. extremely; very; absolutely: a damned good singer; too damned lazy.

Idioms

7. damned well, Informal. certainly or without doubt; emphatically: You damned well better say you’re sorry!Also damn well.

adjective

1. 1. condemned to hell
   2. (as noun)the damned

adverb, adjective slang

2. (intensifier)a damned good try; a damned liar; I should damned well think so!
3. used to indicate amazement, disavowal, or refusal (in such phrases as I’ll be damned and damned if I care)