Definition from Wiktionary, the free dictionary
asperity (plural asperities)
- Roughness as of stone or weather.
- asperity of Maine's winter
- Harshness, as of temper.
- Something that is harsh and difficult to endure.
- (geology) A part of a geological fault line that does not move.
- Earthquakes begin and end at asperities.
roughness as of stone
harshness, as of temper
something that is harsh and hard to endure