in passing

1. 1.

   incidentally; in the course of doing something else

   “he made this remark in passing”

   Synonymsen passant

Questions about in passing

What does in passing mean?

in passing means "incidentally; in the course of doing something else".

What is another word for in passing?

Close synonyms include en passant. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is in passing a common word?

in passing is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.