Yes, kill is a Scrabble word!
...and is worth 8 points in Scrabble, and 10 points in Words with Friends
kill
Verb
1. Cause to die; put to death, usually intentionally or knowingly
2. Thwart the passage of
3. End or extinguish by forceful means
4. Be fatal
5. Be the source of great pain for
6. Overwhelm with hilarity, pleasure, or admiration
7. Hit with so much force as to make a return impossible, in racket games
8. Hit with great force
9. Deprive of life
10. Cause the death of, without intention
11. Drink down entirely
12. Mark for deletion, rub off, or erase
13. Tire out completely
14. Cause to cease operating
15. Destroy a vitally essential quality of or in
Noun
1. The act of terminating a life
2. The destruction of an enemy plane or ship or tank or missile
What Scrabble words can I make with the letters in kill?
3 Letter Words
2 Letter Words