Containing grease, especially too much grease: a greasy hamburger. (adjective)
Suggestive of grease in slickness or slipperiness: a greasy character. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "greasy" in a sentence
"Other unseemly behaviour exposed as part of the case involved a description of Mr Izzo as a "manwhore" with the nickname "greasy", and the exchange by lawyers of "lurid details" of "a gay porn star called Marcus Day", with copies sent to Mr Izzo."
"I went out for dinner and movie with friends yesterday, and instead of indulging in greasy pub food and beer I had 3 unsweetened iced teas (I was v thirsty) and a house salad."
"On the floor, in greasy overalls, squatted a greasy little man to whom his employer nodded."