bent on vs dead set

bent on and dead set both are adjectives.

Word	Noun	Adjective	Verb	Adverb
bent on	No	Yes	No	No
dead set	No	Yes	No	No

As adjectives, bent on and dead set are synonyms defined as:

Other synonyms of bent on include bent, out to.

bent on (adjective)	dead set (adjective)
fixed in your purpose	fixed in your purpose