buttery russian

• ма́сляный

  oil-, made of oil

  oily, greasy

  buttery, butter-

• масляни́стый

  oily, buttery

• ма́сленный

  oily, buttery, oil-based

  oil (painting), oil-colour

  languid, lustful, greasy (of a look)

• му́сленный

  buttery, buttered