Fail
Understand
Understand verb - To form an opinion or reach a conclusion through reasoning and information.
Common collocations
Both words in one sentence
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In other words, evil does not so much fail to understand good as it can only be evil at all because it fails to understand good.
Source: Evil Cannot Comprehend Good - However, many of his modern viewers fail to understand which of the points Plato himself supported.
Source: Misaimed Fandom / Literature - Spike and Cindy from the Thursday Next series are a subversion as they're happy together and Spike manages to fail to understand when Cindy subtly tells him.
Cite this Source
Understand and Fail. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/fail/understand
Fail & Understand. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/fail/understand>.
Understand or Fail. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/fail/understand.
Google Ngram Viewer shows how "fail" and "understand" have occurred on timeline