To strain
Tense up
Tense up verb - Become tense, nervous, or uneasy.
Cite this Source
Tense up and To strain. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/to_strain/tense_up
To strain & Tense up. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/to_strain/tense_up>.
Tense up or To strain. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/to_strain/tense_up.
Google Ngram Viewer shows how "to strain" and "tense up" have occurred on timeline