oftener
— Adverb
– English
~ more often or more frequently
oftenness
— Noun
– English
~ the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
oftentimes
— Adverb
– English
~ many times at short intervals; "we often met over a cup of coffee"