let by

let (one) by

To allow one to pass by or around (someone or something). I need to get into the building to retrieve my briefcase—please let me by! I didn't want to drive any faster on the highway, so I moved closer to the curb to let the cars behind me by.
See also: by, let
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

let someone (get) by

 and let someone pass by
to permit someone to pass. Please let me get by. I am in a hurry. Let the paramedics by, please.
See also: by, let
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
(where appropriate), whereas if the let forms part of an apartment building the other occupiers must approve this let by any other interested owner (most likely they will refuse).