1. acerbity -- (a sharp bitterness)
2. acerbity, tartness -- (a sharp sour taste)
3. bitterness, acrimony, acerbity, jaundice, tartness, thorniness -- (a rough and bitter manner)
1.
Like so many of the Greek divinities, however, the refined conception of the Muses is somewhat marred by the acerbity with which they punished any effort on the par. - from Myths and Legends of Ancient Greece and Rome by E.M. Berens