"Līrisi."

Translation: They are smiling.

[kaligoth]

Is the single word "Lirisi" only "They are smiling"? What's about " We are smiling"?

[xPsGoDWh]

That would be "Līrī."

[Moolah328]

So is this a conjunction of "Līrī" and "issi"? To take "smiling" and "They are" and put it into one word?

[xPsGoDWh]

No. "issi" ends in "-si" because it's a common third person plural ending. "līrisi" also ends in -si because it is a common third person plural ending. "sagon" is not used as an auxiliary verb like the English "to be".