undergo

verb

un·​der·​go ˌən-dər-ˈgō 

underwent ˌən-dər-ˈwent  ; undergone ˌən-dər-ˈgȯn 

also -ˈgän

; undergoing ˌən-dər-ˈgō-iŋ 

-ˈgȯ(-)iŋ

; undergoes

ˌən-dər-ˈgōz

transitive verb

1

: to submit to : endure

2

: to go through : experience

undergo a transformation

3

obsolete : undertake

4

obsolete : to partake of

Synonyms of undergo

• endure
• experience
• have
• see

Examples of undergo in a Sentence

She will have to undergo an operation.

some people undergo a complete transformation while away at college

Recent Examples on the Web

San Francisco has already seen right-hander Hayden Birdsong undergo Tommy John surgery earlier this year, and losing McDonald for an extended period of time would be another brutal blow for the pitching staff. — Justice Delos Santos, Mercury News, 25 July 2026

Haiti’s last census Haiti’s last nationwide census was conducted in 2003, and the country’s demographics have undergone dramatic shifts since. — Jacqueline Charles, Miami Herald, 24 July 2026

Still, investors should recognize that the tech industry's financial profile is undergoing a structural change unlike anything seen in the cloud era, according to Moody's. — Hugh Son, CNBC, 24 July 2026

Actions carried out internally by agents on OpenAI’s Codex platform are carefully monitored, the OpenAI staffer says, but models undergoing evaluation are deployed on a separate system that is not monitored by default. — Harry Booth, Time, 24 July 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for undergo

• afterglow
• akimbo
• albino
• aliquot
• allegro
• amigo
• apropos
• audio
• bungalow
• calico
• calypso
• cameo

Kids Definition

undergo

verb

un·​der·​go ˌən-dər-ˈgō 

underwent

-ˈwent

; undergone -ˈgȯn 

also -ˈgän

; undergoing -ˈgō-iŋ 

1

: endure sense 2

undergo an operation

2

: to pass through : experience

undergoing a change