Irregular Verb - To Undergo

Meaning:

To suffer or go through an unpleasant experience, such as surgery

Conjugation of 'To Undergo'

Base Form: Undergo
Past Simple: Underwent
Past Participle: Undergone
3rd Person Singular: Undergoes
Present Participle/Gerund: Undergoing

Other Irregular Verbs Following a Similar Pattern:

Base Form  Past Simple  Past Participle
Go Went Gone/Been