An example of undergone is to have had surgery.
The palace has undergone alterations and additions, e.g.
Added to it was the pleasure of seeing Cynthia, after all she'd undergone, so utterly enjoying the day.
The hard but salutary training which they had undergone at his hands had taught them that they were the equals of the northern races both in the council chamber and on the field of battle.
The balance of Italian trade has undergone frequent fluctuations.
In accepting, with slight reservations, the results of the development which the Church had undergone during the fifty years from 1640 to 210 it reduced itself to the level of a sect.