Wiktionary
adv. In an oily way.
Usage examples of "oilily".
The floor of the depression was covered with a rotten green slime that glinted oilily in the sun.
The night was not warm, with the breeze coming off the gulf, but Pavlo sweated oilily in the limelight, and fumbled his commands to the dogs and the albino children and his wife, and kept glancing up at the sky, which had begun ruddily to lighten in the east.
What he saw instead was a large, thick swell, smoothly rounded, speeding oilily away.
He charged back with the naked bayonet glinting oilily and evilly in his hand, still screaming cursing, clear across the room where no man tried to stop him, but Maggio moving with his club out into the aisle for clearance and going to meet him, and death suddenly slid into the big room dartingly like a boxer on silent resined feet moving pantherishly in to punch.
Then it emerged from the shadows a block behind him, loping unevenly with long strides that carried it forward with a rush, its matted fur shining oilily under a street lamp.
He smelled of reefer and was too cool to approve of her Saturday work uniform of jeans, denim clogs, and a wacky-colored Oilily sweater over a white T-shirt.