<p><strong>Verb</strong></p><ul><li>(used with object)<ul><li>underwent, undergone, undergoing.</li><li>to be subjected to; experience; pass through: to undergo surgery.</li><li>Antonyms: avoid.</li><li>to endure; sustain; suffer: to undergo sustained deprivation.</li><li>Synonyms: tolerate, bear.</li></ul></li></ul>