What's the difference between simple "often" and "oftentimes", if any?
For example, are they interchangeable in such sentences:
1. People oftentimes don't notice their drawbacks;
2. I often go to the gym;
3. He oftentimes boasts about his achievements in sport?

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I've never heard someone using "oftentimes". I know that it is an old-fashioned form for "often".

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'Oftentimes' is not standard English.

You might hear it, but you will never need to use it. I don't know anyone who uses this word.

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oftentimes.... is just a North American form of 'often'.
both are same

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