Yes, sarcasm is a Scrabble word!
...and is worth 11 points in Scrabble, and 13 points in Words with Friends
sarcasm
Noun
1. Witty language used to convey insults or scorn
What Scrabble words can I make with the letters in sarcasm?
6 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words