by return of post

phrase

British

: immediately by mail

I replied by return of post.

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by return mail

by return of post

byrewoman

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“By return of post.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/by%20return%20of%20post. Accessed 14 Mar. 2026.

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by return of post

phrase

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