Yes, caper is a Scrabble word!
...and is worth 9 points in Scrabble, and 11 points in Words with Friends
caper
Verb
1. Jump about playfully
Noun
1. Any of numerous plants of the genus Capparis
2. Pickled flower buds used as a pungent relish in various dishes and sauces
3. A crime (especially a robbery)
4. A playful leap or hop
5. Gay or light-hearted recreational activity for diversion or amusement
6. A ludicrous or grotesque act done for fun and amusement
What Scrabble words can I make with the letters in caper?
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words