asperity
noun
as·per·i·ty
| \ a-ˈsper-ə-tē
, ə-, -ˈspe-rə-\
, ə-, -ˈspe-rə-\
plural asperities
Definition of asperity
1
: roughness of manner or of temper : harshness of behavior or speech that expresses bitterness or anger
He asked with some asperity just what they were implying.
3a
: roughness of surface : unevenness
also
: a tiny projection from a surface
the asperities of the tongue
b
: roughness of sound