'asperity' definitions:

Definition of 'asperity'

From: WordNet
noun
Something hard to endure; "the asperity of northern winters" [syn: asperity, grimness, hardship, rigor, rigour, severity, severeness, rigorousness, rigourousness]
noun
Harshness of manner [syn: asperity, sharpness] [ant: bluntness, dullness]