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Use "jumpier" in a sentence
"Haslem said that not biting on pump fakes is the most basic element of defending him, but smaller defenders get understandably jumpier when the athletic 7-footer begins to move toward the basket."
"The older I get the jumpier I get around thumps, bangs, and doof doof doof."
"The tension ratchets as Gayford yearns for the sittings to come to an end and Freud grows jumpier at the prospect."