Is it ensure, insure, or assure?
Old English nahwær "nowhere, not at all;" see no + where. Similar constructions were attempted with nowhat (1520s) and nowhen (1764), but they failed to take hold and remain nonce words.
Inferior; tedious; drab: If you're not with it, you're nowhere/ rows of folding chairs, nowheresville decor (1940+)
the middle of nowhere