sour

1. superl. Having an acid or sharp, biting taste, like vinegar, and the juices of most unripe fruits; acid; tart. Source: opted

2. superl. Changed, as by keeping, so as to be acid, rancid, or musty, turned. Source: opted

3. superl. Disagreeable; unpleasant; hence; cross; crabbed; peevish; morose; as, a man of a sour temper; a sour reply. Source: opted

4. superl. Afflictive; painful. Source: opted

5. superl. Cold and unproductive; as, sour land; a sour marsh. Source: opted

6. n. A sour or acid substance; whatever produces a painful effect. Source: opted

7. v. t. To cause to become sour; to cause to turn from sweet to sour; as, exposure to the air sours many substances. Source: opted

8. v. t. To make cold and unproductive, as soil. Source: opted

9. v. t. To make unhappy, uneasy, or less agreeable. Source: opted

10. v. t. To cause or permit to become harsh or unkindly. Source: opted

11. v. t. To macerate, and render fit for plaster or mortar; as, to sour lime for business purposes. Source: opted

12. v. i. To become sour; to turn from sweet to sour; as, milk soon sours in hot weather; a kind temper sometimes sours in adversity. Source: opted

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