Hmmm, I've given this a lot of thought (mainly because I have no life,LOL!).
The only time it was ever suggested that Adam had any supernatural powers was in the season 8 episode, Adam, Warlock or Washout. In that ep we see Adam being tested and showing that he does have powers,howver it has been his granddad Maurice helping him. But at the end when Samantha coaxs him, we are shown that the kid has powers. I totally believe that was just something the writers came up with just to make it more interesting as it was the end of the Bewitched series.
In the 1970s when they did the Bewitched spin-off, Tabitha, Adam is a grown man and has absolutely no supernatural powers at all.
Btw, if you've never seen the series Tabitha - don't worry. It was total crap!!!

He might have been able to do small things like maybe leavation spells. Like he did with that shell. but he probly is more mortal then witch.

You always make me lol Cammie ! I think Adam was most likely to be mortal,but i just want him to have powers so i could see the look on Darrins face lol !!! and to see Maurice teaching him warlock ways !

The word warlock bugs me a bit though...a male witch is still called a witch in actuality. A warlock would actually be a terrible thing to be called (like an oath-breaker, traitor, etc.)