bygone

adjective

by·​gone ˈbī-ˌgȯn 

also -ˌgän

: gone by : past

bygone days

especially : outmoded

bygone styles

bygone noun

Synonyms of bygone

• extinct
• defunct
• vanished
• gone

Examples of bygone in a Sentence

the bygone days of our ancestors

The stone wall is from a bygone age.

Recent Examples on the Web

The series will end its eight-season run on Monday as the lone symbol of a bygone era at The CW. — Katie Campione, Deadline, 24 Sep. 2026

There’s no harm in holding on to old photos and other mementos from your bygone days. — Barton Goldsmith, AJC.com, 23 Sep. 2026

Like much else in Guatemala, the colossal, mint-green presidential palace where Arévalo sat down with me is a holdover from a bygone era of authoritarianism. — Will Freeman, The Atlantic, 20 Sep. 2026

Stickers celebrating bygone 21st birthdays cover the walls outside the bathrooms. — Dana O’Neil, CNN Money, 14 Sep. 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for bygone

• anton
• argon
• axon
• baronne
• baryon
• baton
• boron
• buisson
• capon
• cardon
• chiffon
• coupon

Kids Definition

bygone

adjective

by·​gone ˈbī-ˌgȯn 

also -ˌgän

: gone by : past

a bygone era

bygone noun