oftentimes vs oft

oftentimes and oft both are adverbs.

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

As adverbs, oftentimes and oft are synonyms defined as:

Other synonyms of oftentimes include frequently, often, ofttimes.

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