UNDERGO', verb transitive 1. 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. 2.To pass through. Bread in the stomach undergoes the process of digestion; it undergoes a material alteration. 3. To sustain without fainting, yielding or sinking. Can you undergo the operation, or the fatigue? 4. To be the bearer of; to possess. Virtues - as infinite as man may undergo [Not in use.] 5. To support; to hazard. I have mov'd certain Romans to undergo with me an enterprise. 6. To be subject to. Claudio undergoes my challenge. obsolete
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI