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

Reuters — Norway’s Crown Princess Mette-Marit has undergone a successful lung transplant and is recovering from the procedure, the royal household said in a statement on Wednesday. —CNN Money, 17 June 2026

After the road trip, Washington, then 73, stepped aside from his managerial duties indefinitely before undergoing quadruple bypass heart surgery. —Stephen J. Nesbitt, New York Times, 16 June 2026

Since the incidents, the two children have been diagnosed with PTSD and are undergoing treatment, Williams said. —Los Angeles Times, 16 June 2026

In a 2,000-word research report published on the site, the authors said B2B marketing has undergone a structural transformation and warned of moving to fast to deploy AI. —Arthur Zaczkiewicz, Footwear News, 16 June 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