undergone

/AH0 N D ER0 G AO1 N/
verb
  1. 1

    To go or move under or beneath.

  2. 2

    To experience; to pass through a phase.

    โ€œThe project is undergoing great changes.โ€

  3. 3

    To suffer or endure; bear with.

    โ€œShe had to undergo surgery because of her broken leg.โ€

Source: https://en.wiktionary.org/wiki/undergo, https://en.wiktionary.org/wiki/undergone