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

Family members said Ramon Sandoval is now recovering at home after spending a week in the ICU and undergoing multiple surgeries. —Kenny Choi, CBS News, 7 Apr. 2026

The spa The spa, which is currently undergoing a refresh, is fabulous, with tropical-zen indoor and outdoor treatment rooms and an emphasis on incorporating local ingredients like aloe, passion fruit, and coffee into different services. —Condé Nast, Condé Nast Traveler, 7 Apr. 2026

The facility is currently undergoing a massive USD 750 million (EUR 650 million) overhaul to support the production and rollout of the BMW i3 all-electric sedan, the second model in the Neue Klasse range, from August 2026. —Georgina Jedikovska, Interesting Engineering, 6 Apr. 2026

After undergoing knee surgery after getting injured in the summer of 2024 in a camp scrimmage game, Jackson rehabbed in 2024-25, returning to full-time duty this past campaign. —Gary Bedore, Kansas City Star, 6 Apr. 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