by return

by return (of post)

Through prompt mail correspondence back to the sender. Primarily heard in UK. Please indicate your interest in this offer by return of post.

See also: by, return

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

by reˈturn (of ˈpost)

(British English) using the next available post; as soon as possible: Please reply by return of post.

See also: by, return

Farlex Partner Idioms Dictionary © Farlex 2017