Synonyms of god-knows-where

1 Syllable
far, beyond, back, wild
2 Syllables
unknown, far-off, outlying, frontier, secret, backwoods, far-flung, foreign, devious, distant, boondocks
3 Syllables
unsettled, removed, lonely, faraway, remotest, obscure, remoter, outlandish, alien, off-lying, private, secluded, retired
4 Syllables
isolated, godforsaken, lonesome
5 Syllables
undiscovered, inaccessible