[1] : The Collaborative International Dictionary of English v.0.48

oftentimes \of"tentimes`\, adv. often + time. cf. -wards.
   frequently; often; many times. --wordsworth.
   1913 webster
see also:
-wards 

[2] : WordNet (r) 2.0

oftentimes
     adv : many times at short intervals; "we often met over a cup of
           coffee" syn: frequently, often, oft, ofttimes
           ant: rarely, infrequently
see also:
frequently often oft ofttimes rarely infrequently 

Oftentimes >> O Words
Oftentimes, definition of term: Oftentimes
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