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

In recent days, Witt has undergone full workouts with the Royals’ medical staff. — Jaylon Thompson, Kansas City Star, 1 Aug. 2026

Langeliers underwent surgery on a torn meniscus in his right knee on Tuesday, which is expected to keep the 28-year-old backstop out for the rest of the season. — Sean Campbell, Sacbee.com, 1 Aug. 2026

The progress marks the transition from years of design, research, and technology demonstrations to the construction of physical aircraft that will undergo rigorous testing before entering operational service. — Prabhat Ranjan Mishra, Interesting Engineering, 31 July 2026

Still, the tech giants are undergoing a fundamental shift, as seen by their relentless spending and borrowing. — Jason Ma, Fortune, 31 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