undergo
verb (used with object)
to be subjected to; experience; pass through.
had been undergoing
-
past perfect progressiveof undergo.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The ship had been undergoing maintenance on the south coast.
From BBC ● Mar. 7, 2026
After a media frenzy about the Princess of Wales' whereabouts, the 42-year-old Kate Middleton revealed in March that she also had been undergoing cancer treatment in a video.
From Salon ● Dec. 20, 2024
The 17th Century building was one of the Danish capital's oldest buildings, and had been undergoing renovation work when the fire broke out.
From BBC ● Apr. 18, 2024
Sophie Kinsella, the best-selling English author of the “Shopaholic” book series, revealed on social media on Wednesday that she had been undergoing treatment for an aggressive and often fatal form of brain cancer.
From New York Times ● Apr. 17, 2024
In this particular instance he had been undergoing doubts and misgivings to more than the usual degree.
From The Life of Charles Dickens, Vol. I-III, Complete by John Forster
