1.Having an acid or sharp, biting taste, like vinegar, and the juices of most unripe fruits; acid; tart. "All sour things, as vinegar, provoke appetite."
2.Changed, as by keeping, so as to be acid, rancid, or musty, turned.
3.Disagreeable; unpleasant; hence; cross; crabbed; peevish; morose; as, a man of a sour temper; a sour reply. "A sour countenance." "He was a scholar... Lofty and sour to them that loved him not, But to those men that sought him sweet as summer."
4.Afflictive; painful. "Sour adversity."
5.Cold and unproductive; as, sour land; a sour marsh.
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