oiliness

adjective, oil·i·er, oil·i·est.

1. smeared or covered with oil; greasy: an oily road surface.
2. of the nature of, consisting of, or resembling oil.
3. of or relating to oil.
4. full of or containing oil.
5. smooth or unctuous, as in manner or speech: an oily hypocrite.

adverb

6. in an oily manner.

adjective oilier or oiliest

1. soaked in or smeared with oil or grease
2. consisting of, containing, or resembling oil
3. flatteringly servile or obsequious

adj.1520s, from oil (n.) + -y (2). Figurative meaning “smooth, unctuous” is from 1590s. Related: Oiliness.