SOUR
Sour, v. t. Etym: [AS. s to sour, to become sour.]
1. To cause to become sour; to cause to turn from sweet to sour; as, exposure to the air sours many substances. So the sun's heat, with different powers, Ripens the grape, the liquor sours. Swift.
2. To make cold and unproductive, as soil. Mortimer.
3. To make unhappy, uneasy, or less agreeable. To sour your happiness I must report, The queen is dead. Shak.
4. To cause or permit to become harsh or unkindly. "Souring his cheeks." Shak. Pride had not sour'd nor wrath debased my heart. Harte.
5. To macerate, and render fit for plaster or mortar; as, to sour lime for business purposes.
SOUR
Sour, v. i. [imp. & p. p. Soured; p. pr. & vb. n. Souring.]
Defn: To become sour; to turn from sweet to sour; as, milk soon sours in hot weather; a kind temper sometimes sours in adversity. They keep out melancholy from the virtuous, and hinder the hatred of vice from souring into severity. Addison.
SOURCE
Source, n. Etym: [OE. sours, OF. sourse, surse, sorse, F. source, fr.
OF. sors, p.p. of OF. sordre, surdre, sourdre, to spring forth or up,
F. sourdre, fr. L. surgere to lift or raise up, to spring up. See
Surge, and cf. Souse to plunge or swoop as a bird upon its prey.]
1. The act of rising; a rise; an ascent. [Obs.] Therefore right as an hawk upon a sours Up springeth into the air, right so prayers . . . Maken their sours to Goddes ears two. Chaucer.