n.
1.
Sourness, roughness, tartness, acridity, acridness.
2.
Asperity, acerbity, moroseness, sullenness, moodiness, churlishness, harshness, ill-temper, acrimoniousness.
3.
Difficulty, perplexity, intractability.
n.
1.
Sourness, roughness, tartness, acridity, acridness.
2.
Asperity, acerbity, moroseness, sullenness, moodiness, churlishness, harshness, ill-temper, acrimoniousness.
3.
Difficulty, perplexity, intractability.
Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012