Synonyms for by-and-by

Noun

1. by-and-by, future, hereafter, futurity, time to come

usage: an indefinite time in the future; "he'll get around to it in the sweet by-and-by"

Adverb

1. by and by, later

usage: at some eventual time in the future; "By and by he'll understand"; "I'll see you later"