stubbornly vs cussedly

stubbornly and cussedly both are adverbs.

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

As adverbs, stubbornly and cussedly are synonyms defined as:

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

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