Question

his father had talked of him often: the peerless robert baratheon, demon of the trident, the fiercest warrior of the realm, a giant among princes.
in the sentence above, peerless has the same or almost the same meaning as:
graceful
unadorned
unrivaled
familiar

Explanation:

"Peerless" means having no equal or match. "Unrivaled" also means having no rival or equal. "Graceful" relates to elegance in movement. "Unadorned" means without decoration. "Familiar" means well - known. So, "peerless" and "unrivaled" are most similar.

Answer:

unrivaled