Simlish is the fictional language used by Sims. It is assumed that Simlish is the official language of SimNation.

Is Simlish a real word?

Simlish is the (official) fictional language of The Sims Nation. It was first used in SimCopter and featured in the various games of the franchise and the spinoffs of the series.

Can Simlish translate?

But you can also speak Simlish at Alexa and have it translate for you, and the in-game Lin-Z device will give you new bits of the language to try once your relationship is maxed out. ...