1. Incidentally; in the course of doing something else
   "he made this remark in passing"
   - en passant

Encyclopedia: In passing

• frosted
• frosted bat
• Frostian
• frostily
• frostiness
• frosting
• frostweed
• frostwort
• frosty
• froth
• froth at the mouth
• frothily
• frothiness
• frothing
• frothy
• frottage
• frotteur
• froufrou
• frow
• froward
• frown
• frown line
• frown on
• frown upon
• frowning