Synonyms for Unrivaled:

adj.

matchless (adjective)
matchless.
peerless (adjective)
best, incomparable, unexampled, matchless, unmatched, unequaled, second to none, unparalleled.

n.

best, first-rate, premier, ideal, first class, par excellence, there is no substitute for something, second to none. alone, only, unequaled, same, unexampled, singular, unparalleled, unique. matchless (noun)
unusual, unique, unequaled.
unrivaled (noun)
matchless, peerless, unmatched, unmatchable, one and only, uncomparable, incomparable, nonpareil, one, unrivalled.

Other synonyms:

unique, best. unparalleled, unexampled. only. singular. alone. unmatched
unmatched, unequaled.
Other relevant words:
best, unmatched, unusual, alone, premier, unparalleled, ideal, unequaled, same, unexampled, only, unique, first-rate, singular.

Usage examples for unrivaled

  1. His argumentative powers were of the highest order, and his wit, his invective, and his appeals to the judgment and feelings unrivaled – Sketches of Reforms and Reformers, of Great Britain and Ireland by Henry B. Stanton
  2. Till then, it shone in unrivaled splendor, pouring its beams in the path of progress, and shedding more light around the footsteps of reform than all other like sources combined. – Sketches of Reforms and Reformers, of Great Britain and Ireland by Henry B. Stanton