odd

odd — adjective

1. different from what you would normally expect, in a way that feels surprising, s

1.adjectiveB2
Definition

different from what you would normally expect, in a way that feels surprising, slightly puzzling, or hard to explain.

Example

It is odd that Marcus left the meeting without saying goodbye to anyone.

it is odd that + clause

Mei found the smell in the kitchen odd, like burnt toast mixed with vinegar.

find + object + odd

Common collocations
  • a bit odd
  • rather odd
  • find it odd
  • something odd about
  • an odd feeling
Synonyms
  • strange

    everyday near-equivalent; 'odd' often hints more at puzzling than alarming

  • peculiar

    slightly more formal; suggests a quality belonging only to that thing

  • weird

    stronger and more informal; can imply unease or eeriness

Antonyms
  • normal

    matches what most people expect

  • ordinary

    not interesting or surprising in any way

Grammar Patterns

it is odd that + clause

find it odd that + clause

Usage Note

Often used in the frames 'it is odd that…', 'find it odd that…', or 'there is something odd about…'. Carries a softer judgement than 'weird' — it suggests puzzlement rather than strong disapproval.

Common Mistakes

I have an odd to ask you a question.
I have an odd feeling about this.
'odd' is an adjective and must sit before a noun or after a linking verb, not stand alone.

2. appearing or being done now and then, with long gaps in between rather than as a

2.adjectiveC2
Definition

appearing or being done now and then, with long gaps in between rather than as a regular activity.

Example

Carlos still smokes the odd cigarette when he goes drinking with his old friends.

the odd + singular noun for occasional events

Grandma Rosa does the odd bit of gardening, but mostly she reads on the porch.

the odd bit of + uncountable noun

Common collocations
  • the odd cigarette
  • the odd glass of wine
  • the odd job
  • the odd visitor
Synonyms
  • occasional

    neutral and more common than this sense; can stand without 'the'

  • infrequent

    more formal; emphasises the long gaps between events

Antonyms

Grammar Patterns

the odd + singular noun

Usage Note

Almost always appears as 'the odd + singular noun', meaning a small, irregular number of something over time. Distinguish from sense 1 ('strange'): here 'odd' has nothing to do with strangeness.

Common Mistakes

I drink odd beer after work.
I drink the odd beer after work.
this sense almost always needs the article 'the' before 'odd'.

3. (of a whole number) leaving 1 when you divide by two; for example 1, 3, 5, 7, an

3.adjectiveB1
Definition

(of a whole number) leaving 1 when you divide by two; for example 1, 3, 5, 7, and 9 are odd.

Example

The teacher asked the children to circle every odd number on the page.

odd number as a math term

Houses with odd numbers stand on the left side of our quiet street.

Common collocations
  • an odd number
  • odd-numbered
  • odd and even
Synonyms
  • uneven

    informal alternative; 'odd' is the standard math term

Antonyms
  • even

    exactly divisible by two

Grammar Patterns

odd + number/numeral

Usage Note

Always paired with the contrast 'even'. Used only of whole numbers (integers); not used for fractions or decimals.

Common Mistakes

3.5 is an odd number.
3 is an odd number.
only whole numbers are described as odd or even.

4. (of one item from something that normally comes paired up or as a full set) miss

4.adjectiveB2
Definition

(of one item from something that normally comes paired up or as a full set) missing its partner, or left over once the rest have been matched up.

Example

Lucas walked into class wearing two odd socks — one blue, one striped red.

odd socks for unmatched items

After the move, Mei found a few odd gloves at the bottom of the box.

Common collocations
  • odd socks
  • odd gloves
  • odd shoes
  • an odd one out
Synonyms
  • unmatched

    clearer in writing; spells out that there is no partner

  • mismatched

    items that do not go together as a pair

Antonyms

Grammar Patterns

odd + plural noun (socks/gloves/shoes)

Usage Note

Most natural with everyday paired items: socks, gloves, shoes, earrings, cups and saucers. Distinguish from sense 1 ('strange') by context: 'odd socks' here means mismatched, not weird-looking.

Common Mistakes

I have one odd shoe in my hand.
I have an odd shoe
the other one is missing.' — without context, listeners may hear sense 1 (strange) rather than sense 4 (unmatched).
Idioms

the odd man/one out

idiom

A person or thing that is different from others in a group and does not fit in easily.

In our group of friends, Maya is the odd one out because she doesn't like sports.

Which shape is the odd one out: circle, square, triangle, or ball?

an odd/a queer fish

idiom

A person who is considered slightly strange or unusual.

Our new neighbor is an odd fish; he collects garden gnomes and talks to them.

Did you meet the professor? He's a queer fish, but his lectures are fascinating.

odd — suffix

odd — abbreviation

Word family

  • oddly
    adverbB2
  • oddness
    nounC1
  • oddity
    nounC1
  • odds
    nounB2

Synonym discussion

Sense: adjective/1

All five describe things that fall outside what we expect, but they differ in tone and force. 'Odd' is the gentlest: it suggests something puzzles you and you cannot fully explain it, but you are not alarmed. 'Strange' is its everyday near-twin and slightly broader, used for anything from a stranger's accent to a frightening dream. 'Weird' is the most informal and the most negative, often hinting at unease or eeriness — 'a weird stare' feels uncomfortable in a way 'an odd stare' does not. 'Peculiar' is more formal and points to a quality that belongs only to that one thing, like a peculiar smell in old books. 'Unusual' is the most neutral and simply means 'not common', without any judgement. Compare: 'an odd habit' (slightly puzzling), 'a weird habit' (off-putting), 'an unusual habit' (just rare).

odd ↗strange ↗weird ↗peculiar ↗unusual ↗

Common collocations

Nouns

  • odd feeling
  • odd behaviour
  • odd number
  • odd socks
  • odd job

Adverbs

  • a bit odd
  • rather odd
  • slightly odd
  • decidedly odd
  • distinctly odd

Phrases

  • find it odd that
  • there is something odd about
  • the odd one out
  • an odd choice

Prepositions

  • odd about (something)

Etymology

Old NorseMiddle EnglishEnglish

'Odd' came into Middle English in the 14th century from Old Norse 'oddi', meaning a point, a triangle, or a third extra item left over from a pair. The Old Norse sense 'one left over after pairing' is still alive in modern English in 'odd socks' and 'odd numbers' — a number that, when paired up, leaves one over. From 'left over and not fitting in', the word slowly stretched to mean 'not fitting the usual pattern' and finally 'strange', which is now its most common meaning.