side remark

No amount of gaping, gazing and inquisitive side remark embarrassed the newcomer.

Sometimes, to be sure, a side remark adds piquancy and a personal savour.

Seat yourself as an old man, put your right hand behind your ear as if listening to a side remark.

What most aroused my suspicions, said Donald, was a side remark I heard him whisper to that big dark peon.