Yes, let is a Scrabble word!
...and is worth 3 points in Scrabble, and 4 points in Words with Friends
let
Verb
1. Make it possible through a specific action or lack of action for something to happen
2. Actively cause something to happen
3. Consent to, give permission
4. Cause to move; cause to be in a certain position or condition
5. Leave unchanged
6. Grant use or occupation of under a term of contract
Noun
1. A brutal terrorist group active in Kashmir; fights against India with the goal of restoring Islamic rule of India
2. A serve that strikes the net before falling into the receiver's court; the ball must be served again
What Scrabble words can I make with the letters in let?
3 Letter Words
2 Letter Words