Still, the side has undergone many changes and, crucially, is without its injured playmaker Michael Essien.
In Vienna she had undergone a new medical process, involving her endocrine glands, that rejuvenates the body and skin.
France's Communist party has undergone a revolution and dropped the hammer and sickle from its membership cards.
Old English undergan "undermine," from under + gan (see go). Cf. Middle Dutch ondergaen, Old High German untarkun, German untergehen, Danish undergaa. Sense of "submit to, endure" is attested from c.1300. Meaning "to pass through" (an alteration, etc.) is attested from 1630s. Related: Undergone; underwent.