WordNet sense 1 (something of little value):

darn, hoot, shit, shucks, red cent, tinker's dam, tinker's damn

WordNet sense 2 (wish harm upon; invoke evil upon):

curse, imprecate, anathemise, anathemize, bedamn, beshrew, maledict

WordNet sense 3 (used as expletives):

goddamn

WordNet sense 4 (expletives used informally as intensifiers):

blame, blasted, blessed, damned, darned, infernal, blamed, deuced, goddam, goddamned, blessed

WordNet sense 5 (deserving a curse; sometimes used as an intensifier):

cursed, curst

WordNet sense 6 (extremely):

all-fired, bloody