Definition of motherferyer in US English:

motherferyer

(also motherfuyer, motherferya)

noun

US
slang, euphemism
  • Motherfucker.

Origin

1940s; earliest use found in Mezz Mezzrow (1899–1972), jazz musician. Euphemistic alteration of motherfucker.

Pronunciation

motherferyer

/ˈmʌðəˌfəjə/