Dothraki

"Ase shafki athdrivar" means "Your wish is my command" in Dothraki.

"Sek" means "yes" in Dothraki.

"Vos" means "no" in Dothraki.

"Hajas" means "goodbye" in Dothraki.

"Jalan atthirari anni" means "the moon of my life" in Dothraki.

For example, in Dothraki something done in secret is done torga essheyi—literally, “under a roof”.

Dothraki has four vowels.

You want to learn a really impressive second language? Try Dothraki. Win over any man in my guild.

You might be familiar with more a priori conlangs than you think: The Klingon language from the television series "Star Trek," the Na’vi language from the movie "Avatar," and the Dothraki language from the television series "Game of Thrones" are all examples of a priori languages.

When I say the Dothraki are horse-mad, I don’t mean to suggest that they collect rosettes for their show ponies and enjoy nothing more than a spot of dressage, oh no.

But escaping from 100,000 Dothrakis is impossible, so all Daario and Jorah can do is bar the temple door once Dany is inside with the khals.