Sharp and harsh, or bitter and not to the taste. / Causing heat and irritation. / (figuratively) Caustic; bitter; bitterly irritating.

bitterness or acerbity / An acrid taste or smell.

Bitterness or acerbity. / An acrid taste or smell. / (figuratively) Bitterness in speech or behaviour; causticness.

plural of acridity

comparative form of acrid: more acrid

In a harsh or corrosive manner.

superlative form of acrid: most acrid

(uncountable, organic chemistry) A tricyclic aromatic heterocycle, dibenzopyridine, obtained from coal tar; it is used in the manufacture of dyes and drugs

(organic chemistry) A tricyclic aromatic heterocycle formally derived from acridine by replacing the nitrogen atom with phosphorus

(organic chemistry) A tricyclic aromatic heterocycle formally derived from acridine by replacing the nitrogen atom with arsenic