Yes, soul is a Scrabble word!
...and is worth 4 points in Scrabble, and 6 points in Words with Friends
soul
Noun
1. The immaterial part of a person; the actuating cause of an individual life
2. A human being
3. Deep feeling or emotion
4. The human embodiment of something
5. A secular form of gospel that was a major Black musical genre in the 1960s and 1970s
What Scrabble words can I make with the letters in soul?
3 Letter Words
2 Letter Words