Some emotional states only have names in particular languages. Here are some examples:

Fiero (Italian): contented pride in achieving something just for oneself.

Amae (Japanese): the sweet feeling of being dependent on someone else.

Naches (Yiddish): the glow of proud pleasure that only a child can give to its parents.

Schadenfreude (German): the feeling you experience when you learn that your worst enemy has suffered some misfortune.

Ennui (French): the sophisticated, world-weary boredom most intensely felt by philosophers and intellectuals.