Breadcrumb Home > Dictionary > Index I illegality: Meaning and Definition of Find definitions for: il•le•gal•i•ty Pronunciation: (il"ē-gal'i-tē), [key] — pl. -ties. illegal condition or quality; unlawfulness. an illegal act. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: illegality (Thesaurus) illegal alien illegalize TrendingHere are the facts and trivia that people are buzzing about. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language