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Cassidy

proper nouncommon in dialogue

  • United States//ˈkæsɪdi//
  • United States//ˈkæsədi//

A surname from Irish anglicized from Ó Casaide (“descendant of Caiside”). Caiside is a byname from Irish cas (“curly”) meaning “curly-haired”.

proper noun

  1. 1

    A surname from Irish anglicized from Ó Casaide (“descendant of Caiside”). Caiside is a byname from Irish cas (“curly”) meaning “curly-haired”.

  2. 2

    A surname from Irish, a rare anglicization of Mac Casarlaigh (“son of Casarlach”) (Casserly).

  3. 3

    A male given name transferred from the surname.

  4. 4

    A female given name transferred from the surname, of modern American usage.

  5. 5

    A community in southern Vancouver Island, British Columbia, Canada.

Etymology

From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”).

The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).