The definition of by-and-by is at an unspecified, future time and place.
An example of by-and-by used in a sentence is, "We'll go on that vacation by-and-by," which means we'll go on that vacation at some point in the future.
an unspecified future time
by and by
After a while; soon.
Some future time or occasion.
- Alternative spelling of by and by.
- The meaning of the term has changed from referring to a "near" time (by) to a vaguer range of times, possibly influenced by the use of the term as a noun to refer to the hereafter.