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Synonyms

oily

American  
[oi-lee] / ˈɔɪ li /

adjective

  • oilier,
    comparative
  • oiliest
    superlative
  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.

    Synonyms:
    smarmy

adverb

  1. in an oily manner.

oily British  
/ ˈɔɪlɪ /

adjective

  1. soaked in or smeared with oil or grease

  2. consisting of, containing, or resembling oil

  3. flatteringly servile or obsequious

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Adjectives


Etymology

Origin of oily

First recorded in 1520–30; oil + -y 1


Explanation

Oily things are greasy, slippery, or covered with oil — think a bowl of oily pasta or the oily garage floor after you've been tinkering with your motorcycle's engine. Anything containing oil, covered in oil, or resembling oil is oily. A batch of muffins might taste weirdly oily when you use too much butter, and the rags lying around a car repair shop are mostly black and oily. Your brother's hair will probably be pretty oily after he refuses to wash it for a month. Since the sixteenth century, oily has also had the figurative meaning of "insincerely flattering or slick," like an oily car salesman.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

It requires students to be offered at least two portions of vegetables and one portion of fruit every day and oily fish must be served at least once every three weeks.

From BBC ● Sep. 13, 2026

In a video watched 2.8 million times, a foreign reviewer described it as "kind of like chewy tofu" and "very oily".

From Barron's ● Aug. 14, 2026

Mr. Rechner’s oily delivery suggests a guy who hasn’t read the figurative room.

From The Wall Street Journal ● Aug. 11, 2026

“This is an industrial area, and there’s plenty of stuff around to catch fire,” he said, sidestepping a dribble of oily water.

From Los Angeles Times ● May 24, 2026

Something heavy and oily squirmed in my stomach.

From "From Twinkle, with Love" by Sandhya Menon

Using shampoo every day, Alam said, can be the right choice for people with oilier scalps where sebum can accumulate, making the hair limp, greasy and possibly smelly.

From Seattle Times ● Jun. 11, 2023

The rice in the thieboudienne here was broken, and oilier than in the versions I’d eaten in New York and Paris, probably because of palm oil, which is harder to procure in the West.

From New York Times ● Nov. 11, 2021

She features 70 recipes for white-fleshed fish, such as cod, haddock or sole; oilier fish, such as salmon and mackerel; and shellfish, including shrimp, squid and clams.

From Washington Post ● Oct. 12, 2021

In Asia-Pacific, this rise in deep-cleansing products was attributed to mask-related issues, including issues like oilier skin and acne, as well as an increase in hygiene habits due to Covid-19.

From BBC ● Jul. 24, 2020

And in a voice oilier than the one before, he’d answer with a straight face, “From the Uglies.”

From "I Know Why the Caged Bird Sings" by Maya Angelou

Deravian remembers her mother standing at the stove, snacking on the stubborn scraps still left in the pot: “The crackliest, oiliest, tastiest bits.”

From New York Times ● Nov. 11, 2021

Oil is the dirtiest industry in the world and Chevron, one the world's largest companies, must be the oiliest.

From The Guardian ● Feb. 18, 2011

Bodanzky is, at the same time, the gayest and j oiliest of companions, who gives huge laughter to comic tales and sits like a great paladin to watch a game of cards.

From Time Magazine Archive

He edged close and dropped his voice to the oiliest whisper: "You'll say dat good word now to Miss Cleo right away, sah?"

From The Sins of the Father A Romance of the South by Thomas Dixon

"Well, we will have many of these jolly little spreads," he was saying in his oiliest tones.

From The Rose in the Ring by George Barr McCutcheon

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