Welsh
Welsh is a language spoken on Earth.

When the  encountered the  lifeform in 2257, what appeared to be a computer virus caused the universal translator to translate the crew's speech into a chaotic cacophony of languages. When R.A. Bryce tried to explain the situation to Captain Christopher Pike, he was translated into Welsh: "Capten Pike! Mae'r gronnell wedi ateb ein croeso ni... a dyma beth ddigwyddodd, BOOM!" ()

In 2269, while under the influence of the female members of Theela's species, Montgomery Scott sang "Yr Hufen Melyn", a song whose lyrics were in Welsh. ()

External links

de:Walisisch
Earth languages