incidentally
[adverb]
Synonyms: parenthetically, by the bye, by the way, in passing

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Antonyms: deliberately
Related Idioms: in the bygoing

[TahlilGaran] English Synonym Dictionary ▲

in‧ci‧den‧tal‧ly AC /ˌɪnsəˈdentəli, ˌɪnsɪˈdentəli/ adverb

1. [sentence adverb] used to add more information to what you have just said, or to introduce a new subject that you have just thought of Synonym : by the way:
Incidentally, where were you born?
The wine, incidentally, goes very well with a mature cheese.

2. in a way that was not planned, but as a result of something else:
Quite incidentally, I got some useful information at the party.

[TahlilGaran] Dictionary of Contemporary English ▲