Good night in Cornish

Nos da

In Cornish, the phrase to know first is "Nos da!" (Good night!). The others are below, each with a note on when to use it.

Good night in Cornish is Nos da, as in Welsh. Below are the greeting, a second form from the dictionary, and a good night to Mum. Each phrase comes with a short note on when to use it.

Greetings

Nos da!

Good night!

The usual form.

Nos da, Mamm.

Good night, Mum.

Mamm is mother.

Durnostadha!

Good night!

A set greeting given in the dictionary.

About the words

Nos means night and da good. The Akademi Kernewek dictionary gives "good night" as nos da, and also records the greeting Durnostadha. Welsh says nos da in the same way.

Common questions

How do you say good night in Cornish?

Nos da!

Good night in the other Celtic languages

Further reading

Cornish is on blas. now

Grammar, mutations, vocabulary, and reading with spaced repetition. The Cornish course is in the blas. app now.

Start learning Cornish

Cornish phrases for the year ahead

Cornish phrases for everyday occasions

Sources

Every phrase and fact on this page was checked against the sources below. Last checked 2026-10-20.

Credit: Wiktionary contributors, CC BY-SA 4.0.