obstinately vs cussedly

obstinately and cussedly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
obstinately	No	No	No	Yes
cussedly	No	No	No	Yes

As adverbs, obstinately and cussedly are synonyms defined as:

Other synonyms of obstinately include mulishly, obdurately, pig-headedly, stubbornly.

obstinately (adverb)	cussedly (adverb)
in a stubborn unregenerate manner	in a stubborn unregenerate manner