Expire vs Terminate

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

Expire

Top 2,000 (common)C1verb

Terminate

FormalTop 2,000 (common)C1verb
Most formal: Terminate
 ExpireTerminate
Pronunciation🇬🇧 /["/ɪkˈspaɪə(r)/","/ɪkˈspaɪəz/","/ɪkˈspaɪəd/","/ɪkˈspaɪərɪŋ/"]/🇺🇸 /["/ɪkˈspaɪər/","/ɪkˈspaɪərz/","/ɪkˈspaɪərd/","/ɪkˈspaɪərɪŋ/"]/🇬🇧 /["/ˈtɜːmɪneɪt/","/ˈtɜːmɪneɪts/","/ˈtɜːmɪneɪtɪd/","/ˈtɜːmɪneɪtɪŋ/"]/🇺🇸 /["/ˈtɜːrmɪneɪt/","/ˈtɜːrmɪneɪts/","/ˈtɜːrmɪneɪtɪd/","/ˈtɜːrmɪneɪtɪŋ/"]/
Meaningto end or no longer be validTo end something or make it stop.
ExampleWhen does your driving licence expire?Your contract of employment terminates in December.
RegisterNeutralFormal
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelC1C1
Part of speechverbverb
Collocationsbe due to, be due toabruptly, prematurely, immediately, be entitled to, decide to, the decision to terminate something, the right to terminate something
Antonymscontinue, renewbegin, start, continue
Common mistakesUsing 'expire' with non-time related objects., Confusing 'expire' with 'inspire'., Incorrectly using 'expired' as a noun.Using 'terminate' instead of 'finish' in informal contexts., Confusing with 'terminate' when discussing ongoing situations; it's for ending., Mispronouncing as if it has three syllables instead of two.
Usage notesUse 'expire' when referring to licenses, subscriptions, or food. Not appropriate for informal contexts or slang.Primarily used in legal, business, or technical contexts. Not commonly used in casual conversation. Avoid using in friendly or informal contexts as it may come off as harsh.

Frequently asked questions: Expire vs Terminate

What's the difference between Expire and Terminate?

Expire: to end or no longer be valid Terminate: To end something or make it stop.

Which is more formal: Expire and Terminate?

Terminate is the most formal of these.

Are Expire and Terminate the same CEFR level?

Expire: C1, Terminate: C1 on the CEFR scale.

Can I use Expire and Terminate interchangeably?

Not always. Expire and Terminate 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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