preexisting vs pre-existent

preexisting and pre-existent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
preexisting	No	Yes	No	No
pre-existent	No	Yes	No	No

As adjectives, preexisting and pre-existent are synonyms defined as:

Other synonyms of preexisting include pre-existing, preexistent.

preexisting (adjective)	pre-existent (adjective)
existing previously or before something	existing previously or before something