Nervosities is a 11 letter English word. It's valid Words with friends word worth 16 points.
You can make 764 anagrams from letters in nervosities (eeiinorsstv).
1605-15 in sense “strength”; nerv(ous) + -osity; compare Latin nervōsitās strength
But at the same time his nervosity caused him to produce sometimes effects a trifle hard, a trifle harsh.
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