Where does “oftener” come from?

Oftener comes from English often, which derives from Middle English often and ofte, Old English oft, and Proto-Germanic ufta, all meaning frequently or repeatedly.

oftener (English): comparative form of often: more often

Definitions

comparative form of often: more often

Ancestry of “oftener”, step by step

Step	Language	Word	Meaning
1	English	often	Frequently, many times; Frequent
2	Middle English	often	repeatedly, again and again, many times, frequently
3	Middle English	ofte	oft, often
4	Old English	oft	often
5	Old High German	oftu	—
6	Proto-Germanic	uftō	oft; often

Every word from Proto-Germanic uftō →Every word from Old High German oftu →Every word from Old English oft →