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well-oiled

American  
[wel-oild] / ˈwɛlˈɔɪld /

adjective

  1. operating with efficiency.

    a well-oiled department.

  2. Slang. drunk.


well-oiled British  

adjective

  1. informal (well oiled when postpositive) drunk

"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

Etymology

Origin of well-oiled

First recorded in 1730–40

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.

Amazon’s e-commerce business “remains a well-oiled machine” delivering consistent revenue growth and capturing global market share in a slow-growth retail environment, according to Horowitz.

From MarketWatch • Jan. 9, 2026

As for the prognosis for these companies, note that at each of these well-oiled machines, succession is considered mission critical.

From Barron's • Dec. 18, 2025

He ran a well-oiled machine, with members of his inner circle performing specific roles.

From The Wall Street Journal • Nov. 23, 2025

In Chicago, Boystown — with its mix of cocktail lounges, gay bars, nightclubs, parades and drag brunches — has become a well-oiled machine for queer culture in the city.

From Salon • Mar. 31, 2025

We practiced at working together as smoothly as a well-oiled machine.

From "Code Talker: A Novel About the Navajo Marines of World War Two" by Joseph Bruchac