oftentimes vs ofttimes

oftentimes and ofttimes both are adverbs.

Word	Noun	Adjective	Verb	Adverb
oftentimes	No	No	No	Yes
ofttimes	No	No	No	Yes

As adverbs, oftentimes and ofttimes are synonyms defined as:

Other synonyms of oftentimes include frequently, oft, often.

oftentimes (adverb)	ofttimes (adverb)
many times at short intervals	many times at short intervals