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To sour; to imbitter; to irritate.

Sour or severe.

Sourness and harshness. [Obs.] Bailey.

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. Johnson.

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

r derived from, acetyl, as acetic ether, acetic acid. The latter is the acid to which the sour taste of vinegar is due.

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. "An acetous spirit." Boyle. "A liquid of an acetous kind." Bp. Lowth.

Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered. He was stern and his face as acid as ever. A. Trollope.

To sour; to imbitter. His thin existence all acidified into rage. Carlyle.

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. Arbuthnot.

Having an acid quality; sour; acidulous. "With anxious, acidulent face." Carlyle.

Slightly sour; sub-acid; sourish; as, an acidulous tincture. E. Burke. Acidulous mineral waters, such as contain carbonic anhydride.

uthority of; to give recognition to. In all thy ways acknowledge Him. Prov. iii. 6. By my soul, I'll ne'er acknowledge thee. Shak.