The term 'Bygone Time' refers to a period of time in the PAST. This can be expressed in a variety of ways, such as 'ELD' (3 letters), which is an OLD word for 'OLD', 'YORE' (4 letters), which means 'long AGO', 'ERAS' (4 letters), which is a period of time in history, 'AGO' (3 letters), which is a measure of time, 'ERA' (3 letters), which is another word for a period of time, 'OLDEN' (5 letters), which is an adjective meaning 'of the PAST', 'PAST' (4 letters), which is another word for 'bygone time', and 'daysofyore' (10 letters), which is a phrase meaning 'in the distant PAST'.