Yours, Etc.: Origins and Uses of 8 Sign-Offs
Yiddish exclamation of dismay, 1892, American English. Extended form oy vey (1959) includes Yiddish vey, from German Weh "woe" (see woe).
An exclamation of multiple significance: Oy may be employed to express anything from ecstasy to horror
[1892+; fr Hebrew]