# Castilian

> English word · Proper noun · IPA /kəˈstɪljən/ · frequency rank #57,926

## Definitions
1. The Castilian dialect of Spanish, often (especially historically) considered the prestige dialect of Spanish.
2. Synonym of Spanish, the language of Spain and its former colonies.

## Etymology
From Castile + -ian as a calque of Spanish castellano (“Of or related to Castile, Spain, or the Spanish language”). Doublet of castellano, castellanus, castellan, and chatelain.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/castilian