(adj): unsurpassed in some respect up to the present
(adj): impossible to measure or compare in value or size or excellence
(adj): prenominal), one and only(prenominal), peerless, unmatched, unmatchable, unrivaled, unrivalled -- (eminent beyond or above comparison
(adj): predicate), unique, unequaled, unequalled, unparalleled -- (radically distinctive and without equal