Yes, pretend is a Scrabble word!

Verb

1. Make believe with the intent to deceive

2. Behave unnaturally or affectedly

3. Put forward a claim and assert right or possession of

4. Put forward, of a guess, in spite of possible refutation

5. Represent fictitiously, as in a play, or pretend to be or act like

6. State insincerely

Adjective

1. Imagined as in a play

Noun

1. The enactment of a pretense