[ od ]
/ ɒd /
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See synonyms for: odd / odder / oddest / odds on Thesaurus.com

adjective, odd·er, odd·est.
something that is odd.
  1. a stroke more than the opponent has played.
  2. British. a stroke taken from a player's total score for a hole in order to give him or her odds.
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Origin of odd

First recorded in 1300–50; Middle English odde, from Old Norse oddi “odd (number)”

synonym study for odd

1. See strange.


oddly, adverboddness, noun


ad, add, odd
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021


What is a basic definition of odd?

Odd refers to a number that will have a remainder of 1 when divided by 2. Odd also describes something that is unusual or weird. Odd has many other senses as an adjective and a few as a noun.

An odd number is any number that has a remainder of 1 when it’s divided by 2. For example, 7 divided by 2 is 3 with a remainder of 1. 7 is an odd number. On the other hand, 8 divided by 2 is 4 with no remainder. A number, such as 8, that has no remainder when divided by 2 is called an even number.

Real-life examples: 5, 11, 37, and 649 are examples of odd numbers.

Used in a sentence: I always like to cut my pizzas into an odd number of slices. 

Odd also describes something that is unusual or not what a person would expect.

Real-life examples: People often make odd choices or odd decisions that catch other people by surprise. For example, it might be considered odd to go swimming in regular clothing because people usually wear a bathing suit. A firefighter showing up to a fire in an ice cream truck would be odd because they are expected to drive fire trucks, which have firefighting tools.

Used in a sentence: They were caught off guard by the man’s odd choice of words. 

Odd can also refer to something that is very strange, weird, or bizarre.

Real-life examples: Works of fantasy like the Harry Potter series often include very odd creatures, such as plant monsters or giant, flying jellyfish. In everyday life, people may display odd behavior, such as walking on their hands down the street.

Used in a sentence: The circus clown drove an odd car that was shaped like a giant pie.

Where does odd come from?

The first records of odd come from around 1300. It ultimately comes from the Old Norse oddi meaning “odd (number).”

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What are some other forms related to odd?

  • oddly (adverb)
  • oddness (noun)

What are some synonyms for odd?

What are some words that share a root or word element with odd

What are some words that often get used in discussing odd?

How is odd used in real life?

Odd is most commonly used to describe people or things that are unusual. It is also commonly used in the context of numbers.



Try using odd!

Is odd used correctly in the following sentence?

It is odd to serve birthday cake at a birthday party.

How to use odd in a sentence

British Dictionary definitions for odd

/ (ɒd) /

  1. one stroke more than the score of one's opponent
  2. an advantage or handicap of one stroke added to or taken away from a player's score
a thing or person that is odd in sequence or number
See also odds

Derived forms of odd

oddly, adverboddness, noun

Word Origin for odd

C14: odde: from Old Norse oddi point, angle, triangle, third or odd number. Compare Old Norse oddr point, spot, place; Old English ord point, beginning
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

Scientific definitions for odd

[ ŏd ]

Divisible by 2 with a remainder of 1, such as 17 or -103.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.