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Synonyms

incidentally

American  
[in-si-den-tl-ee, -dent-lee] / ˌɪn sɪˈdɛn tl i, -ˈdɛnt li /

adverb

  1. apart or aside from the main subject of attention, discussion, etc.; by the way; parenthetically.

    Incidentally, while you were waiting for the officer to run your registration through the system, did you notice if the post office was open?

  2. in the course of something else, and not intentionally.

    The bone fractures were discovered only incidentally, during an unrelated CT scan of her chest.
incidentally British  
/ ˌɪnsɪˈdɛntəlɪ /

adverb

  1. as a subordinate or chance occurrence

  2. (sentence modifier) by the way

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of incidentally

First recorded in 1655–65; incidental + -ly

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.