Definition of asperities:
(n) :
(figurative) (uncountable) The quality of being difficult or unpleasant to experience; (countable) a thing that is harsh and difficult to endure; a difficulty, a hardship.
(n) :
(figurative) (uncountable) The quality of being harsh or severe in the way one behaves or speaks toward another person; (countable, chiefly in the plural) a deeply hostile or resentful feeling; an animosity, a hatred.
(n) :
(uncountable) The quality of having a rough or uneven surface; roughness, unevenness; (countable, chiefly in the plural) a protruding or rough area or point on a surface; a protrusion.
(n) :
(countable, geology) A section of a fault line with high friction, such that there is no movement along this part of the fault except during an earthquake.
(n) :
(figurative) (uncountable, archaic) Of sound: gratingness, harshness.
(n) :
(figurative) (uncountable, archaic) Of taste: harshness or sharpness; acridity, tartness.