Extension and Flexion

Extension

Extension noun - Act of stretching or straightening out a flexed limb.

Flexion is an antonym for extension.

Flexion

Flexion noun - Act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased.
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Synonyms for Flexion

Extension is an antonym for flexion.

Nearby Words: flexible, flexibility, flexure, flex, flexed
Cite this Source
Flexion and Extension. (2016). Retrieved 2026, August 18, from https://thesaurus.plus/related/extension/flexion
Extension & Flexion. N.p., 2016. Web. 18 Aug. 2026. <https://thesaurus.plus/related/extension/flexion>.
Flexion or Extension. 2016. Accessed August 18, 2026. https://thesaurus.plus/related/extension/flexion.


Google Ngram Viewer shows how "extension" and "flexion" have occurred on timeline