1. endure, experience, go through, suffer. undergo\un`der*go"\ , v. t. [imp. underwent ; p. p. undergone (?; 115); p. pr. & vb. n. undergoing.] [as. undergān. see:
under, and go.].
2. to go or move below or under. [obs.].
3. to be subjected to; to bear up against; to pass through; to endure; to suffer; to sustain; as, to undergo toil and fatigue; to undergo pain, grief, or anxiety; to undergothe operation of amputation; food in the stomach undergoes the process of digestion. certain to undergo like doom.
4. to be the bearer of; to possess. [obs.] their virtues else, be they as pure as grace, as infinite as man may undergo.
5. to undertake; to engage in; to hazard. [obs.] i have moved already some certain of the noblest-minded romans to undergo with me an enterprise.
6. to be subject or amenable to; to underlie. [obs.] claudio undergoes my challenge.undergo v.
7. of mental or physical states or experiences: "get an idea"; "experience vertigo"; "get nauseous"; "undergo a strange sensation"; "the chemical undergoes a sudden change"; "the fluid undergoes shear"; "receive injuries"; "have a feeling" [syn: experience, receive, have, get].
8. go or live through; "we had many trials to go through"; "he saw action in viet nam" [syn: experience, see, go through ].
9. accept or undergo, often unwillingly; "we took a pay cut" [syn: take, submit].
10. To go or move below or under.
11. To be subjected to; to bear up against; to pass through; to endure; to suffer; to sustain; as, to undergo toil and fatigue; to undergo pain, grief, or anxiety; to undergothe operation of amputation; food in the stomach undergoes the process of digestion.
12. To be the bearer of; to possess.
13. To undertake; to engage in; to hazard.
14. To be subject or amenable to; to underlie.
15. If you undergo something necessary or unpleasant, it happens to you. New recruits have been undergoing training in recent weeks He underwent an agonising 48-hour wait for the results of tests. if you undergo a change, an unpleasant experience etc, it happens to you or is done to you.