All 6 Uses of

redoubtable
in
The Odyssey, by Homer - (translated by: Butler)

So saying she bound on her glittering golden sandals, imperishable, with which she can fly like the wind over land or sea; she grasped the redoubtable bronze-shod spear, so stout and sturdy and strong, wherewith she quells the ranks of heroes who have displeased her, and down she darted from the topmost summits of Olympus, whereon forthwith she was in Ithaca, at the gateway of Ulysses' house, disguised as a visitor, Mentes, chief of the Taphians, and she held a bronze spear in her hand.†
Book 1

This can have been none other of those who dwell in heaven than Jove's redoubtable daughter, the Trito-born, who shewed such favour towards your brave father among the Argives.†
Book 3 *

Then I saw Alcmena, the wife of Amphitryon, who also bore to Jove indomitable Hercules; and Megara who was daughter to great King Creon, and married the redoubtable son of Amphitryon.†
Book 11

Then Ulysses rejoiced at finding himself again in his own land, and kissed the bounteous soil; he lifted up his hands and prayed to the nymphs, saying, "Naiad nymphs, daughters of Jove, I made sure that I was never again to see you, now therefore I greet you with all loving salutations, and I will bring you offerings as in the old days, if Jove's redoubtable daughter will grant me life, and bring my son to manhood."†
Book 13

What you wonder at is the work of the redoubtable goddess Minerva, who does with me whatever she will, for she can do what she pleases.†
Book 16

Meanwhile Ulysses, as long as his arrows lasted, had been shooting the suitors one by one, and they fell thick on one another: when his arrows gave out, he set the bow to stand against the end wall of the house by the door post, and hung a shield four hides thick about his shoulders; on his comely head he set his helmet, well wrought with a crest of horse-hair that nodded menacingly above it, (endnote 168) and he grasped two redoubtable bronze-shod spears.†
Book 22

Definition:

inspiring fear or worthy of respect