sour

sour is an Adverb

Definition:

[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. Bacon.

[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." Swift. He was a scholar . . . Lofty and sour to them that loved him not, But to those men that sought him sweet as summer. Shak.

[4] Afflictive; painful. "Sour adversity." Shak.

[5] Cold and unproductive; as, sour land; a sour marsh. Sour dock (Bot.), sorrel. -- Sour gourd (Bot.), the gourdlike fruit Adansonia Gregorii, and A. digitata; also, either of the trees bearing this fruit. See Adansonia. -- Sour grapes. See under Grape. -- Sour gum (Bot.) See Turelo. -- Sour plum (Bot.), the edible acid fruit of an Australian tree (Owenia venosa); also, the tree itself, which furnished a hard reddish wood used by wheelwrights.