to fall or slide down; to decline; to fall in value
His golf game is going south.
slang; goes south, going south, went south, gone south
And when bets started to go south, the market, realizing that it had no way to assess the extent of the damage, freaked out.
Nut oils are expensive and go south faster than geese in winter.
If events continue to go south in a big way, the IRGC might be forced to choose between competing, compelling security priorities.
"vanish, abscond," 1920s, American English, probably from mid-19c. notion of disappearing south to Mexico or Texas to escape pursuit or responsibility, reinforced by Native American belief (attested in colonial writing mid-18c.) that the soul journeys south after death.
[probably fr the notion of disappearing south of the border, to Texas or to the Mexican border, to escape legal pursuit and responsibility; probably reinforced by the widespread Native American belief that the soul after death journeys to the south, attested in American Colonial writing fr the mid-1700s; GTT, ''Gone to Texas, absconded,'' is found by 1839]