Expand vs Extend vs Increase

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

Expand

Top 2,000 (common)B1verb

Extend

Top 2,000 (common)B2verb

Increase

Top 1,000 (very common)A2verb
Most common: Increase
 ExpandExtendIncrease
Pronunciation🇬🇧 //ɪkˈspænd//🇺🇸 //ɪkˈspænd//🇬🇧 /["/ɪkˈstend/","/ɪkˈstendz/","/ɪkˈstendɪd/","/ɪkˈstendɪŋ/"]/🇺🇸 /["/ɪkˈstend/","/ɪkˈstendz/","/ɪkˈstendɪd/","/ɪkˈstendɪŋ/"]/🇬🇧 /["/ɪnˈkriːs/","/ɪnˈkriːsɪz/","/ɪnˈkriːst/","/ɪnˈkriːsɪŋ/"]/🇺🇸 /["/ɪnˈkriːs/","/ɪnˈkriːsɪz/","/ɪnˈkriːst/","/ɪnˈkriːsɪŋ/"]/
Meaningto make something bigger or more in amountTo make something longer or bigger.To make something larger in amount or size.
ExampleThe company plans to expand its operations into new markets.We need to extend the deadline for our project submission.We need to increase our budget for the project.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 1,000 (very common)
CEFR levelB1B2A2
Part of speechverbverbverb
Collocationsexpand a business, expand horizons, expand your mind, expand on an idea, expand the servicegreatly, significantly, beyond, from, to, greatly, significantly, beyond, from, to, greatly, significantly, beyond, from, toconsiderably, dramatically, drastically, be expected to, be likely to, by, from, in
Antonymsshrink, contract, reduceshorten, reducedecrease, reduce, diminish
Common mistakesConfusing 'expand' with 'extend', which refers to prolonging something rather than making it larger., Using 'expand' without an object (e.g., 'expand' instead of 'expand it')., Incorrectly using 'expand' in situations where 'grow' or 'increase' is more appropriate.Confused with 'expand' — forgetting that 'extend' often refers to length rather than volume., Using the wrong preposition with 'extend', like 'extend to' instead of 'extend for'.Using 'increases' as a noun instead of a verb., Confusing 'increase' with 'decrease' which has the opposite meaning., Incorrectly forming the past tense as 'increased' when it should be 'increased' without a change.
Usage notesUse 'expand' for increasing size, numbers, or range. It's appropriate in academic or formal contexts but can also be used informally. Avoid using it in contexts where the meaning is of a steady state rather than change.Use 'extend' when talking about adding time, space, or length. Appropriate in both casual and formal contexts, but avoid using in overly informal situations.Use 'increase' in contexts involving growth, improvement, or enhancement. It is appropriate for both spoken and written English, but avoid in overly casual conversations where simpler words like 'go up' might be preferred.

Frequently asked questions: Expand vs Extend vs Increase

What's the difference between Expand, Extend, and Increase?

Expand: to make something bigger or more in amount Extend: To make something longer or bigger. Increase: To make something larger in amount or size.

Which is more common: Expand, Extend, and Increase?

Increase is the most common in everyday English.

Which is more advanced: Expand, Extend, and Increase?

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

Are Expand, Extend, and Increase the same CEFR level?

Expand: B1, Extend: B2, Increase: A2 on the CEFR scale.

What part of speech are Expand, Extend, and Increase?

Expand: verb, Extend: verb, Increase: verb.

Can you show an example of each?

Expand: The company plans to expand its operations into new markets. Extend: We need to extend the deadline for our project submission. Increase: We need to increase our budget for the project.

Can I use Expand, Extend, and Increase interchangeably?

Not always. Expand, Extend, and Increase 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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