sui juris

[ soo-ahy joo r-is, soo-ee ]
/ ˈsu aɪ ˈdʒʊər ɪs, ˈsu i /

adjective Law.

capable of managing one's affairs or assuming legal responsibility.
Compare alieni juris.

Origin of sui juris

First recorded in 1605–15, sui juris is from the Latin word suī jūris of one's own right
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for sui juris

sui juris

/ (ˈsuːaɪ ˈdʒʊərɪs) /

adjective

(usually postpositive) law of full age and not under disability; legally competent to manage one's own affairs; independent

Word Origin for sui juris

C17: from Latin, literally: of one's own right
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012