verb (used with object), un·der·went, un·der·gone, un·der·go·ing.

to be subjected to; experience; pass through: to undergo surgery.
to endure; sustain; suffer: to undergo sustained deprivation.

Origin of undergo

before 1000; Middle English undergon, Old English undergān. See under-, go1
Related formsun·der·go·er, noun

Synonyms for undergo

1. See experience. 2. bear, tolerate.

Antonyms for undergo

1. avoid.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for undergone

experienced, known, borne, withstood, felt, encountered

Examples from the Web for undergone

Contemporary Examples of undergone

Historical Examples of undergone

  • His expression was that of one who has just undergone a soul-stirring shock.

    Within the Law

    Marvin Dana

  • His expression had undergone a favourable change; it was less grim.

    Green Mansions

    W. H. Hudson

  • Have they undergone a similar change, through the arts of this wicked Circe?

    Tanglewood Tales

    Nathaniel Hawthorne

  • The great mistake I made was, in supposing I had undergone any real change of heart.

    Ned Myers

    James Fenimore Cooper

  • The rock has undergone complete metamorphism and its origin is unknown.

British Dictionary definitions for undergone


verb -goes, -going, -went or -gone

(tr) to experience, endure, or sustainto undergo a dramatic change of feelings
Derived Formsundergoer, noun

Word Origin for undergo

Old English: earlier meanings were more closely linked with the senses of under and go
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for undergone



Old English undergan "undermine," from under + gan (see go). Cf. Middle Dutch ondergaen, Old High German untarkun, German untergehen, Danish undergaa. Sense of "submit to, endure" is attested from c.1300. Meaning "to pass through" (an alteration, etc.) is attested from 1630s. Related: Undergone; underwent.

Online Etymology Dictionary, © 2010 Douglas Harper