Odd vs Spare

When to use each in English, with meaning, register, and examples.

Odd

Top 1,000 (very common)B1adjective

Spare

Top 2,000 (common)B2adjective
Most common: Odd
 OddSpare
Pronunciation🇬🇧 /["/ɒd/"]/🇺🇸 /["/ɑːd/"]/🇬🇧 /["/speə(r)/"]/🇺🇸 /["/sper/"]/
MeaningStrange or unusual.extra or unused.
ExampleIt's odd how he always knows what I'm thinking.He's studying music in his **spare time**.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1B2
Part of speechadjectiveadjective
Collocationsbe, feel, look, extremely, fairly, very, how odd, it is odd to think, something oddspare time, spare parts, spare room, spare change, spare tire
Antonymseven, normal, commondeplete, consume, use up
Common mistakesUsing 'odd' to describe something that is simply different but not strange., Confusing 'odd' with 'oddly', which is an adverb., 'Odd' used incorrectly in positive contexts when it should be neutral or negative.Confusing 'spare' with 'share'., Using 'spare' with uncountable nouns incorrectly., Misplacing it in a sentence, like saying 'spare me some time' instead of 'spare some time for me.'
Usage notesUse 'odd' to describe something that is not normal or makes you feel uneasy. It can refer to behavior, things, numbers, etc. Avoid using it in very formal situations.Use 'spare' to describe something extra that can be used if needed. It's common in everyday conversation and writing, but avoid using it in overly formal contexts.

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Spare

Frequently asked questions: Odd vs Spare

What's the difference between Odd and Spare?

Odd: Strange or unusual. Spare: extra or unused.

Which is more common: Odd and Spare?

Odd is the most common in everyday English.

Which is more advanced: Odd and Spare?

Spare is the highest level, at B2, on the CEFR scale.

Are Odd and Spare the same CEFR level?

Odd: B1, Spare: B2 on the CEFR scale.

What part of speech are Odd and Spare?

Odd: adjective, Spare: adjective.

Can you show an example of each?

Odd: It's odd how he always knows what I'm thinking. Spare: He's studying music in his **spare time**.

Can I use Odd and Spare interchangeably?

Not always. Odd and Spare are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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