(oilier, oiliest)
1.
Something that is ~ is covered with oil or contains oil.
He was wiping his hands on an ~ rag...
When she was younger, she had very ~ skin...
ADJ
2.
Oily means looking, feeling, tasting, or smelling like oil.
...traces of an ~ substance.
ADJ: usu ADJ n
3.
If you describe someone as ~, you dislike them because you think they are too polite or say exaggeratedly nice things, and are insincere.
He had behaved with undue and ~ familiarity...
= smarmy
ADJ disapproval