greasy

Concise Oxford English Dictionary © 2008 Oxford University Press:
greasy/ˈɡriːsi/

▶adjective (greasier, greasiest)

• 1 covered with or resembling grease.

  ■ producing more body oils than average.

  ■ containing or cooked with too much oil or fat.

• 2 effusively polite in a repellently insincere way.

– derivatives
greasily adverb,
greasiness noun.