noun, plural ir·reg·u·lar·i·ties for 2, 3.

the quality or state of being irregular.
something irregular.
a breach of rules, customs, etiquette, morality, etc.
occasional mild constipation.

Origin of irregularity

1275–1325; Middle English irregularite < Old French < Medieval Latin irrēgulāritās. See ir-2, regularity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for irregularities

Contemporary Examples of irregularities

Historical Examples of irregularities

  • I was regular in my irregularities, and orderly in my disorders.

    Micah Clarke

    Arthur Conan Doyle

  • Minor typographical errors and irregularities have been corrected.

    Mountain Meditations

    L. Lind-af-Hageby

  • If the road is too dry, the drag will not smooth the irregularities.

  • He seized at irregularities in the bank, and got his head above the level of the ground.

    Mistress Wilding

    Rafael Sabatini

  • He ventured to correct the irregularities of the ballads, and not seldom has spoiled them.

British Dictionary definitions for irregularities


noun plural -ties

the state or quality of being irregular
something irregular, such as a bump in a smooth surface
a breach of a convention or normal procedure
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

Word Origin and History for irregularities



early 14c., "violation of Church rules," from Old French irregularité (14c.) and directly from Medieval Latin irregularitas, from irregularis (see irregular). Meaning "state of being not regular" is from 1590s.

Online Etymology Dictionary, © 2010 Douglas Harper