We've found 3 phrases for incidentally (0.194 seconds):

by the by »    Used to introduce a new topic; incidentally.

by the way »    Incidentally; a parenthetical statement not timely, central, or crucial to the topic at hand; foregone, passed by, something that has already happened.

horse of a different color »    An unrelated or only incidentally related matter with distinctly different significance.

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