expressio unius est exclusio alterius

noun

ex·​pres·​sio uni·​us est ex·​clu·​sio al·​ter·​i·​us
ik-ˈspre-shē-ō-yu̇-ˈnī-əs-ˌest-ik-ˈsklü-zē-ō-ȯl-ˈtir-ē-əs, ek-ˈspre-sē-ō-ü-ˈnē-u̇s-ˌest-ek-ˈsklü-sē-ō-äl-te-ˈrē-u̇s
: a principle in statutory construction: when one or more things of a class are expressly mentioned others of the same class are excluded

Word History

Etymology

New Latin, the explicit mention of one (thing) is the exclusion of another

Dictionary Entries Near expressio unius est exclusio alterius

expression

expressio unius est exclusio alterius

expressive

Cite this Entry

“Expressio unius est exclusio alterius.” Merriam-Webster.com Legal Dictionary, Merriam-Webster, https://www.merriam-webster.com/legal/expressio%20unius%20est%20exclusio%20alterius. Accessed 24 Apr. 2024.

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