Relations with the engineering and sportscar company soon turned sour, however, and the licence was revoked.

BBC: Caterham Cars and Renault link up to build sportscars

Those bets could sour, however, if the American economy slows, as many suspect it is already doing (see article).

ECONOMIST: Falling oil prices cheer central bankers

Despite fears the events could turn sour, however, mourners - and even police and journalists - appeared to greatly outnumber protesters near St Paul's.

BBC: Margaret Thatcher: London halts for ceremonial funeral

Dinoire's delight at her new face, however, quickly turned sour.

BBC: Magazine

However, the transaction soon turned sour.

ECONOMIST: Banking

For the unions, however, it is not simply a matter of sour grapes or settling the score for the failure of national Democratic leaders to step up to the plate.

FORBES: Unions To National Democratic Politicians: Who Needs You?

However a compromise is reached, what was supposed to have been the jolliest budget on record has turned into a sour reminder that old traditions cannot, in Ireland, be casually chucked.

ECONOMIST: Ireland