What's the origin of the idiom go south? Why is it go south only? Why not go southwest or go east?
Are the direction-related idioms go south, go north, go east, and go west correlated?
Example, go south from http://idioms.thefreedictionary.com/go+south:
- to make an escape; to disappear.
- to fall; to go down.
- drop out of sight
I've read a few times go east young man or go west young man, but I am not sure that they formally exist or not.
Best Answer
The use of south as in the phrase go south stems from the 1920s (from the Oxford English Dictionary):
The reason South is correlated with down is because of its use in the standard Western set of cardinal directions:
According to the Oxford English Dictionary, the meaning of telling someone to "go west" is not related to the phrase "going south". Instead, it means:
The phrase go west on its own also refers figuratively to death (as the sun sets in the West).
There is no similar idiom "go east", unless one is actually telling someone to go in the cardinal direction of east.
The direction "north" has a figurative meaning as well:
Though north and south have related meanings (higher and lower, respectively), they are used in different ways. North is usually used in respect to a give figure or amount. For example,
However, south is usually used as a general figure of speech. For example,
That being said, the two can be used both to refer to figure amounts, although in my experience this usage is rarer: