noun
1.
Synonyms: difficulty 1, hardness, hardship, rigor, vicissitude
Related Word: austerity, bitterness, grimness, harshness, inclemency, severity, stringency
Contrasted words: blandness, gentleness, mildness, softness
2.
Synonyms: inequality 1, irregularity, roughness, unevenness
3.
Synonyms: acrimony , acerbity, mordancy
Related Word: harshness, keenness, roughness, sharpness; irritability, snappishness, tartness, waspishness
Contrasted words: blandness, smoothness, suavity, urbanity; courtesy, gallantry
Antonyms: amenity