Superlative form of grippy; having the most grip, traction, or holding power; most sticky or adhesive.
From 'grippy' plus superlative suffix '-est' (Old English origin). Standard English formation to express the highest degree of gripping quality.
The grippiest shoe soles use microscopic patterns that mimic gecko feet—nature inspired engineers to create climbing shoes that can grip nearly vertical rock, showing how biology teaches materials science!
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