1. To go or move below or under.

2. 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." (Milton)

3. To be the bearer of; to possess. "Their virtues else, be they as pure as grace, As infinite as man may undergo." (Shak)

4. To undertake; to engage in; to hazard. "I have moved already Some certain of the noblest-minded Romans To undergo with me an enterprise." (Shak)

5. To be subject or amenable to; to underlie. "Claudio undergoes my challenge." (Shak)

Origin: AS. Undergan. See Under, and Go.