by the way
by the bye
Just as some added fact or news; as something else that I think of. Used to introduce something related to the general subject, or brought to mind by it.
We shall expect you; by the way, dinner will be at eight.
I was reading when the earthquake occurred, and, by the way, it was The Last Days of Pompeii that I was reading.
Movies are my favorite form of entertainment. Oh, by the way, have you seen the new picture that’s playing at the Bijou?
Vera’s been divorced for three years now. She told me, by the way, that she never plans to remarry.
fall by the wayside
drop by the wayside
To give up or fail before the finish.
The boys tried to make a 50-mile hike, but most of them fell by the wayside.
George, Harry, and John entered college to become teachers, but Harry and John fell by the wayside, and only George graduated.