The characteristic or quality of being groggy.(noun)
Tenderness or stiffness in the foot of a horse, resulting in a hobbling gait.(noun)
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Use "grogginess" in a sentence
"Sorry this entry has meandered so; can I claim it's grogginess from the cold?"
"The small amount of caffeine helps not because it "speeds up your metabolism", but because it gets rid of the grogginess."
"It was a feeling I would come to know well—the haze and the grogginess—almost as well as its opposite (lack-of-sleep inertia), during the three years I would spend in the Boston Combined Residency Program (BCRP) in pediatrics."