n. spirit, soul

Feim zii gron!
Fade spirit bind!
(Become Ethereal Shout)

Sahloknir! Ziil gro dovah ulse!
Sahloknir! Your soul is bound to me for eternity!
(Alduin, 000CC4F2)

Sahrotaar! Ziil los dii du!
Sahrotaar, your soul is mine to devour!
(Miraak, 0202A8F0)

“Fade” in your tongue. Mortals have greater affinity for this Word than the dov. Everything mortal fades away in time, but the spirit remains. Ponder the meaning of spirit. Unslaad zii. Where mortal flesh may wither and die, the spirit endures.
(Paarthurnax, 000E8274)

Nafni wahlaan qethsegol bormahii vahrukt, Rognvald, wen Zii fen mahfaeraak aak ok brod, ahrk folook ok hokoron.
Nafni raised this stone for his father, Rognvald, whose Spirit will forever guide his clan, and haunt his enemies.
(Word Wall for Zii, Become Ethereal)

Word of Power, refers to the living soul and spirit, in contrast with sil ‘soul’ which better refers to souls in the afterlife.

Related to rii ‘essence’.