Acting chimplike, or being primal.
Stop acting so chimpish

Kid was acting chimpish over at the KFC
by HughBalls August 2, 2009
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of a chimp type; one who exhibits or resembles the typical rambunctious tendencies of a chimp or simian.
Evan is being awful chimpish today, we might have to put him down
by Dr. Negative December 12, 2022
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