BYGONE
bygone, bypast, departed, foregone, gone
(adjective) well in the past; former; “bygone days”; “dreams of foregone times”; “sweet memories of gone summers”; “relics of a departed era”
bygone, water under the bridge
(noun) past events to be put aside; “let bygones be bygones”
Source: WordNet® 3.1
Etymology
Adjective
bygone (not comparable)
Having been or happened in the distant past.
Synonyms
• foregone, historical; see also past
Noun
bygone (plural bygones)
(usually plural) An event that happened in the past.
Anagrams
• gone by
Source: Wiktionary
By"gone`, a.
Definition: Past; gone by. "Bygone fooleries." Shak
By"gone`, n.
Definition: Something gone by or past; a past event. "Let old bygones be"
Tennyson. Let bygones be bygones, let the past be forgotten.
Source: Webster’s Unabridged Dictionary 1913 Edition