"acridity" in the noun sense
1. acridity
having an acrid smell
2. acridity, acridness
extreme bitterness
"the acridity of alkali"
3. acridity, acridness
the quality of being sharply disagreeable in language or tone
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License