underwent

• (Received Pronunciation) IPA^(key): /ˌʌn.dəˈwɛnt/

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• (General American) IPA^(key): /ˌʌn.dɚˈwɛnt/

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• Rhymes: -ɛnt
• Hyphenation: un‧der‧went

underwent

1. simple past of undergo
   • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, Chicago, Ill.: Field Museum of Natural History, →ISBN, page viii:

     The repeated exposure, over decades, to most taxa here treated has resulted in repeated modifications of both diagnoses and discussions, as initial ideas of the various taxa underwent—often repeated—conceptual modification.

• went under