To suffer; to endure something burdensome or painful to the body or the mind; as, to undergo toil and fatigue; to undergo pain; to undergo grief or anxiety; to undergo the operation § of amputation.

To pass through. Bread in the stomach undergoes the process of digestion; it undergoes a material alteration.

To sustain without fainting, yielding or sinking. Can you undergo the operation, or the fatigue?

To be the bearer of; to possess. Virtues - as infinite as man may undergo.

To support; to hazard. I have mov’d certain Romans to undergo with me an enterprise.

To be subject to. Claudio undergoes my challenge. Obs.