oily

adjective

Pronunciation: /ˈɔɪli/

Etymology: From Middle English oylei, equivalent to oil + -y. Compare German ölig (“oily”), Swedish oljig (“oily”).

Covered with or containing oil.
“oily machinery; oily rags; oily fish; oily cooking”
“His clothes were apt to look oily and smell of eating-houses.”
Resembling oil.
“oily swells; oily seas”
“There were no breakers and no waves, for not a breath of wind was stirring. Only a slight oily swell rose and fell like a gentle breathing, and showed that the eternal sea was still moving and living.”
Excessively friendly or polite but insincere.
“Near-synonyms: slick, buttery; smarmy”
“[…] for I want that glib and oyly Art, To ſpeake and purpoſe not, ſince what I well entend Ile do’t before I ſpeake, […]”

Etymology: From Middle English oylei, equivalent to oil + -y. Compare German ölig (“oily”), Swedish oljig (“oily”).

A marble with an oily lustre.
“Lustered (also called lusters, rainbows, oilies, and pearls).”
“But marbles are not only used to play games: they are also traded. In this market, the value of the different kinds of marbles (oilies, emperors, etc.) is determined by local supply and demand and not by the price of the marbles […]”
Oilskins. (waterproof garment)