/god"damd"/ , adj., superl. goddamnedest or goddamndest , adv. Informal ( sometimes offensive ).
adj.
1. damned (def. 2).
2. (esp. in the superlative) unusually difficult to deal with; extremely complicated or peculiar.
adv.
3. damned.
Also, goddamn, goddam .
[ 1915-20; GOD + DAMNED ]