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Wiktionary
spikiness

n. The state or condition of being spiky.

Usage examples of "spikiness".

But some black bears and some grizzlies, they have a kind of bristle to the hair on their backs, a kind of spikiness like a porcupine that tells you they're just spoiling for a fight, hoping you'll say a cross word so's they can take a swipe at your head and suck your lunch back up through your neck.