Answer: damndest

AnswerCrossword Clue
DAMNDESTUtmost
damndestdetestable; loathsome
damndestutmost effort, in phrase to do one's damndest also DAMNEDEST, DAMNEST
damndestextremely; very
damndestextraordinary; amazing
damndestcomplete; utter
damndestcondemned to eternal punishment
damndestthose condemned to suffer eternal punishment