Knuckle under
Knuckle under verb - To cease resistance (as to another's arguments, demands, or control).
Usage example: encouraged her to stand firm and not knuckle under to political pressure
Submit
Submit verb - To cease resistance (as to another's arguments, demands, or control).
Usage example: in the end he submitted and agreed to take that awful-tasting medicine
Knuckle under is a synonym for submit in comply topic. You can use "Knuckle under" instead a verb "Submit", if it concerns topics such as surrender.
Mutual synonyms
Related pairs
Cite this Source
Submit and Knuckle under. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/knuckle_under/submit
Knuckle under & Submit. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/knuckle_under/submit>.
Submit or Knuckle under. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/knuckle_under/submit.
Google Ngram Viewer shows how "knuckle under" and "submit" have occurred on timeline