"Acerbate" is a word in ENGLISH

Sour, bitter, and harsh to the taste, as unripe fruit; sharp and harsh.

Sour or severe.

Sourness and harshness.

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

The quality of being acescent; the process of acetous fermentation; a moderate degree of sourness.

A substance liable to become sour.

Turning sour; readily becoming tart or acid; slightly sour.

Pertaining to, containing, or derived from, acetyl, as acetic ether, acetic acid. The latter is the acid to which the …

The act of making acetous or sour; the process of converting, or of becoming converted, into vinegar.

Sour like vinegar; acetous.

The quality of being acetous; sourness.

Having a sour taste; sour; acid.

Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: …

A sour substance.

One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening …

To sour; to imbitter.

The quality of being sour; sourness; tartness; sharpness to the taste; as, the acidity of lemon juice.

Sourly; tartly.

Acidity; sourness.

To make sour or acid in a moderate degree; to sour somewhat.