sour

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sour

1. made acid or bad, as in the case of milk or alcohol, by the action of microorganisms
2. (esp of the weather or climate) harsh and unpleasant
3. (of oil, gas, or petrol) containing a relatively large amount of sulphur compounds
4. Chiefly US any of several iced drinks usually made with spirits, lemon juice, and ice

sour

[sau̇r]
(chemistry)
Containing large amounts of malodorous sulfur compounds (such as mercaptans or hydrogen sulfide), as in crude oils, naphthas, or gasoline.
References in periodicals archive ?
What's more, a CPA's presence as an exemplary audit committee member would be welcomed when markets turn sour and trial attorneys look for weaknesses on behalf of clients who have incurred losses.
But even the mostly tolerant worlds we urbanites live in can turn sour and violent at the drop of an epithet.
And there is mounting concern among professionals about how these investors, many of them first-timers, will react when markets turn sour.
87, which is highly unlikely to provide any short-covering support, should things turn sour for the stock.
Sugas refuse to namedrop SUGABABES' Sweet 7 album launch on Wednesday threatened to turn sour after ex-bandmate Mutya Buena applied to the European Trademarks Authority to reclaim the band's name.
It's great to see Derby in the top flight again and I hope it doesn't turn sour.