2. hardship; difficulty; rigor: the asperities of polar weather.
3. roughness of surface; unevenness.
4. something rough or harsh.
c.1230, asprete "harshness of feelings," a fig. use, from O.Fr. asperete, from L. asperitas "roughness," from asper "rough," of unknown origin.
(i totally fucked that up when i first posted this,sorry)