“Hyper is when you have too much giddy-up and need to get rid of some energy. You didn’t take a nap.” My four year old granddaughter, explaining what she meant when she called our dog, Mia, hyper.
Main Entry: hy•per
Etymology: short for hyperactive
Date: circa 1942
1 : HIGH-STRUNG, EXCITABLE; also : highly excited
2 : extremely active