blockheaded vs duncical

blockheaded and duncical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
blockheaded	No	Yes	No	No
duncical	No	Yes	No	No

As adjectives, blockheaded and duncical are synonyms defined as:

Other synonyms of blockheaded include boneheaded, duncish, fatheaded, loggerheaded, thick-skulled, thick, thickheaded, wooden-headed.

blockheaded (adjective)	duncical (adjective)
(used informally) stupid	(used informally) stupid