darned vs deuced

darned and deuced both are adjectives.

Word	Noun	Adjective	Verb	Adverb
darned	No	Yes	No	No
deuced	No	Yes	No	No

As adjectives, darned and deuced are synonyms defined as:

Other synonyms of darned include blame, blamed, blasted, blessed, damn, damned, goddam, goddamn, goddamned, infernal.

darned (adjective)	deuced (adjective)
expletives used informally as intensifiers	expletives used informally as intensifiers