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

An ultrasound discovered a mass in his testicle, requiring Reeve to undergo a procedure known as orchiectomy to remove his testicle. — ABC News, 29 Sep. 2026

As a result, Reeve underwent another operation, this time to remove dozens of lymph nodes from his abdomen. — Allison Degrushe, StyleCaster, 29 Sep. 2026

The Orsay’s display includes five works that have recently undergone technical examination with several new revelations about the father of Impressionism’s practice. — Sarah Belmont, ARTnews.com, 29 Sep. 2026

As the company points out, each application must pass several AI checks and then undergo human review before being handed over to the government. — Matthew Kayser, Miami Herald, 29 Sep. 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