Yes, allow is a Scrabble word!

Verb

1. Make it possible through a specific action or lack of action for something to happen

2. Consent to, give permission

3. Let have

4. Give or assign a resource to a particular person or cause

5. Make a possibility or provide opportunity for; permit to be attainable or cause to remain

6. Allow or plan for a certain possibility; concede the truth or validity of something

7. Afford possibility

8. Allow the other (baseball) team to score

9. Grant as a discount or in exchange

10. Allow the presence of or allow (an activity) without opposing or prohibiting