- pass through; "The chemical undergoes a sudden change"; "The fluid undergoes shear"; "undergo a strange sensation"
- Operation Undergo was the 3rd Canadian Infantry Division's operation to take the fortified French port of Calais in September, 1944. A subsidiary operation was executed to silence and capture the heavy batteries at Cap Gris Nez, which threatened the sea approaches to Boulogne.Stacey
- To go or move under or beneath; To experience; to pass through a phase; To suffer or endure; bear with
- v. experience or endure (sth unpleasant or painful)