To search or feel around for something with your hands, usually in the dark or blindly; can also mean to touch someone inappropriately without permission.
From Old English 'grapian' (to grasp or seize). The word originally just meant to feel around, but gained its inappropriate connotation in modern English.
The word has completely different emotional weight depending on context—searching for a light switch in the dark, groping for the right words, or the serious crime of sexual assault, showing how meaning depends entirely on what's being touched.
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