1961, "bribery," from Yiddish shmir "spread," from shmirn "to grease, smear," from M.H.G. smiren, from O.H.G. smirwen "to smear" (see
smear (v.); cf. slang to grease (someone's) palm "to bribe"). Phrase the whole schmear "the entire affair" is attested from 1969, originally show business jargon,