E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Outis (Greek, nobody).
A name assumed by Odysseus in the cave of Polyphmos. When the monster roared with pain from the loss of his eye, his brother giants demanded from a distance who was hurting him: Nobody, thundered out Polyphemos, and his companions went their way. Odysseus in Latin is Ulysses.