IPA: /ˈækrɪdnəs/
KK: /ˈækrɪdnəs/
A strong and unpleasant taste or smell that can be sharp and irritating.
The acridness of the smoke made it difficult to breathe.
Acridness → It is formed from "acrid" (from Latin "acridus", meaning sharp or bitter) and the suffix "-ness" (meaning the state or quality of). The word "acridness" refers to the quality of being sharp or bitter in taste or smell.
Think of the word 'acrid' which means sharp or bitter, and remember that 'acridness' describes the state of having that sharp or bitter quality.