Acerbity n. : Sourness of taste, with bitterness and astringency, like that of unripe fruit.

Acerbity n. : Harshness, bitterness, or severity; as, acerbity of temper, of language, of pain.

Example:
why do we reject our nemesis with such Acerbity, our counter part without who we would not exist?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, acer, Word Games, Webster Online Dictionary with audio pronunciations, thesaurus, Google Search, Custom Search, glossary, english, language, ESL, Search, ty, Inflected, ties, acerbic.

Defination from the web:
acerbity from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "acerbity" and related topics at Britannica.com. Pronunciation Symbols. Share this entry: Link to this page: Cite this page: Products ...