Yes, wish is a Scrabble word!
...and is worth 10 points in Scrabble, and 9 points in Words with Friends
wish
Verb
1. Hope for; have a wish
2. Prefer or wish to do something
3. Make or express a wish
4. Feel or express a desire or hope concerning the future or fortune of
5. Order politely; express a wish for
6. Invoke upon
Noun
1. A specific feeling of desire
2. An expression of some desire or inclination
3. (usually plural) a polite expression of desire for someone's welfare
4. The particular preference that you have
What Scrabble words can I make with the letters in wish?
3 Letter Words
2 Letter Words