/ Dictionary / Index I irregularity: Meaning and Definition of Find definitions for: ir•reg•u•lar•i•ty Pronunciation: (i-reg"yu-lar'i-tē), [key] — pl. -ties the quality or state of being irregular. something irregular. a breach of rules, customs, etiquette, morality, etc. occasional mild constipation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: irregularity (Thesaurus) irregular galaxy irregular variable Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language