FAQs About the word by-and-by

gradually

future,futurity,tomorrow,hereafter,in the distance,eventuality,finality,posterity

now,past,yesterday,antiquity,moment,old,present,today,yesteryear,yore

by word of mouth => by word of mouth, by trial and error => by trial and error, by the way => By the way, by the piece => by the piece, by the day => by the day,