souring

Verb

sour (third-person singular simple present sours, present participle souring, simple past and past participle soured)

1. (transitive) To make sour.
   • Too much lemon juice will sour the recipe.
2. (intransitive) To become sour.
   • So the sun's heat, with different powers, / Ripens the grape, the liquor sours.1720, Jonathan Swift, To Stella, on transcribing my Poems
3. (transitive) To spoil or mar; to make disenchanted.
   • To sour your happiness I must report, / The queen is dead.1611 April (first recorded performance), William Shakespeare, “The Tragedie of Cymbeline”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard...
4. (intransitive) To become disenchanted.
   • We broke up after our relationship soured.
5. (transitive) To make (soil) cold and unproductive.
   • stagnant water , which tends to sour the soil1832, Joseph Harrison, Sir Joseph Paxton, The Horticultural Register, page 396
6. To macerate (lime) and render it fit for plaster or mortar.

See all 21 meanings of sour