Affidavit vs Confirmation

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

Affidavit

FormalBeyond 10,000 (less common)

Confirmation

Top 2,000 (common)C1noun
Most formal: AffidavitMost common: Confirmation
 AffidavitConfirmation
Pronunciation🇬🇧 //ˌæfɪˈdeɪvɪt//🇺🇸 //ˌæfɪˈdeɪvɪt//🇬🇧 /["/ˌkɒnfəˈmeɪʃn/"]/🇺🇸 /["/ˌkɑːnfərˈmeɪʃn/"]/
MeaningA written statement made under oath for use in court.Saying that something is true or correct
ExampleHe signed the affidavit in front of the notary.I'm still waiting for confirmation of the test results.
RegisterFormalNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
CEFR level-C1
Part of speechnoun
Collocationsfile an affidavit, submit an affidavit, sworn affidavit, affidavit of support, affidavit of identityadditional, further, independent, ask for, need, require, come, hearing, in confirmation, confirmation in writing, subject to confirmation
Antonyms-denial, disagreement, refutation
Common mistakesConfusing affidavit with 'declaration' - they have different legal implications., Using affidavit in non-legal contexts without understanding its formal nature., Mispronouncing the word due to its complex spelling.Confusing with 'affirmation', which is more about support or approval., Using in informal settings without clarification can sound awkward., Saying 'confirmations' instead of the uncountable 'confirmation'.
Usage notesUsed in legal contexts, especially for court cases. Not suitable in casual conversation or informal writing.Use this word in professional or formal contexts when acknowledging information or decisions. It may not be suitable for casual conversations.

Frequently asked questions: Affidavit vs Confirmation

What's the difference between Affidavit and Confirmation?

Affidavit: A written statement made under oath for use in court. Confirmation: Saying that something is true or correct

Which is more formal: Affidavit and Confirmation?

Affidavit is the most formal of these.

Which is more common: Affidavit and Confirmation?

Confirmation is the most common in everyday English.

Can I use Affidavit and Confirmation interchangeably?

Not always. Affidavit and Confirmation 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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