harshness or sharpness of tone, temper, or manner; severity; acrimony

The cause of her anger did not warrant such asperity.

hardship; difficulty; rigor

the asperities of polar weather.

roughness of surface; unevenness.

something rough or harsh.

noun

calmness , happiness , kindness , mildness

noun

acerbity , acrimony , bitterness , churlishness , crabbiness , crossness , difficulty , disagreeableness , irascibility , irritability , meanness , moroseness , peevishness , roughness , sharpness , sourness , sullenness , tartness , hardship , rigor , vicissitude , briskness , hardness , harshness , hostility , unevenness