1) Ago 2) Ancient 3) Bypast 4) Foregone 5) Forepassed 6) Obsolete 7) Ofold 8) Old 9) Olden 10) Old time 11) Past 1) Antiquated 2) Bypast 3) Departed 4) Earlier 5) Exclusively Saxon word 6) Exclusively Anglo word 7) Foregone 8) Former 9) Gone 10) Gone by 11) In the past 12) Long past 13) Olden 14) Past 15) Past events to be put aside 16) Well in the past 17) Word of purely Anglo origin 18) Word with Anglo-Saxon origins 
• (a.) Past; gone by. • (n.) Something gone by or past; a past event.
By'gone` (bī'gŏn`; 115) adjective Past; gone by. ' Bygone fooleries.' Shak. By'gone` noun Something gone by or past; a past event. 'Let old bygones be' Tennyson. Let bygones be bygones , 
[adj] - well in the past 2. [n] - past events to be put aside
bypast adjective well in the past; former; `bygone days`; `dreams of foregone times`; `sweet memories of gone summers`; `relics of a departed era`
past; gone by; earlier; former: The faded photograph brought memories of bygone days.