Yes, mentor is a Scrabble word!
...and is worth 8 points in Scrabble, and 10 points in Words with Friends
mentor
Verb
1. Serve as a teacher or trusted counselor
Noun
1. A wise and trusted guide and advisor
What Scrabble words can I make with the letters in mentor?
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words