Yes, wait is a Scrabble word!
...and is worth 7 points in Scrabble, and 7 points in Words with Friends
wait
Verb
1. Stay in one place and anticipate or expect something
2. Wait before acting
3. Look forward to the probable occurrence of
4. Serve as a waiter or waitress in a restaurant
Noun
1. Time during which some action is awaited
2. The act of waiting (remaining inactive in one place while expecting something)
What Scrabble words can I make with the letters in wait?
3 Letter Words
2 Letter Words