Yes, privy is a Scrabble word!
...and is worth 13 points in Scrabble, and 14 points in Words with Friends
privy
Adjective
1. Hidden from general view or use
2. (followed by `to') informed about something secret or not generally known
Noun
1. A room or building equipped with one or more toilets
2. A small outbuilding with a bench having holes through which a user can defecate
What Scrabble words can I make with the letters in privy?
3 Letter Words
2 Letter Words