one-off

American

adjective

done, occurring, or made only once; one-shot.

noun

something occurring, done, or made only once.

one-off British

noun

Also: one-shot.
1. something that is carried out or made only once
2. ( as modifier )
  
  a one-off job

"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 one-off

First recorded in 1935–40

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.

Excluding certain one off items, Sherwin logged adjusted earnings of $2.35 a share, topping the average analyst target of $2.27 a share, as per FactSet.

From The Wall Street Journal • Apr. 28, 2026

An oil tanker was damaged off the coast of the United Arab Emirates, according to Reuters, as was one off the coast of Oman.

From Los Angeles Times • Mar. 1, 2026

Jayla never thought she’d buy a house pretty much sight unseen, much less one off the coast of Italy.

From Slate • Feb. 1, 2026

"This is the title I haven't won yet. Last year I came up short against Luke Humphries so I want to tick this one off."

From BBC • Nov. 21, 2025

"These are nice bowls," she says, taking one off my windowsill.

From "We Are Okay" by Nina LaCour

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023