Past tense of undergo
The past simple of undergo is underwent and the past participle is undergone: undergo – underwent – undergone.
- Base form V1
- undergo
- Past simple V2
- underwent
- Past participle V3
- undergone
Start irregular verbs training
undergo, underwent, undergone and 316 more, in Retite Pro. New accounts try it free.
See what undergo means, with examples and a translation into your language.
Check in the appUndergo, underwent, undergone in sentences
- Past simpleHe underwent an operation last spring.
- Past participleThe building has undergone major repairs.
Common mistakes
undergoedunderwent. Undergo is irregular, so it does not take -ed.The building has underwent major repairs.The building has undergone major repairs. After have, use the past participle, undergone.
Similar verbs
Undergo is built on go and changes the same way.
All three forms different, like undergo: be, do, go, know, see, take, give, write.
Common questions
What is the past tense of undergo?
Underwent. For example: He underwent an operation last spring.
What is the past participle of undergo?
Undergone. It follows have in the perfect tenses, as in The building has undergone major repairs.
Is undergo a regular verb?
No. Undergo is irregular: its past forms do not end in -ed.
