/ Dictionary / Index S sui juris: Meaning and Definition of Find definitions for: su•i ju•ris Pronunciation: (s'ī joor'is, s'ē), [key] — Law. Law. capable of managing one's affairs or assuming legal responsibility. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sui generis* suimate Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language