Present participle of slip; losing grip, sliding unexpectedly, or gradually declining in performance or condition.
From Middle Low German slippen, related to Dutch slippen meaning 'to slide.' The word evolved from describing physical sliding motion to metaphorical uses like declining performance or escaping notice.
The physics of slipping reveals fascinating principles about friction and surface tension - even the most secure grip depends on microscopic irregularities creating friction between surfaces. When we say someone's 'slipping,' we're unconsciously applying this physical principle to mental or performance states, suggesting a loss of the 'grip' needed for control.
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