Loosen
Loosen verb - To make less taut.
Usage example: the lead climber loosened the climbing rope so that the other climber could have more room to maneuver
Undo is a synonym for loosen in tighten topic. In some cases you can use "Undo" instead a verb "Loosen", when it comes to topics like loose, disengage, untie, unfasten. popular alternative
Mutual synonyms
Common collocations
Cite this Source
Undo and Loosen. (2016). Retrieved 2026, August 18, from https://thesaurus.plus/related/loosen/undo
Loosen & Undo. N.p., 2016. Web. 18 Aug. 2026. <https://thesaurus.plus/related/loosen/undo>.
Undo or Loosen. 2016. Accessed August 18, 2026. https://thesaurus.plus/related/loosen/undo.
Google Ngram Viewer shows how "loosen" and "undo" have occurred on timeline