ETYM Pref. in- not + commensurable: cf. French incommensurable.
1. Impossible to measure or compare in value or size or excellence.
2. Not having a common factor.
ETYM Latin incomparabilis: cf. French incomparable. Related to In- not, and Comparable.
Such that comparison is impossible; unsuitable for comparison or lacking features that can be compared; SYN. uncomparable.
ETYM Latin inimitabilis: cf. French inimitable. Related to In- not, and Imitable.
Defying imitation; matchless.
Eminent beyond or above comparison; SYN. nonpareil, one, one and only, peerless, unmatched, unmatchable, unrivaled, unrivalled.
Having no equal
1. Too valuable to set a price on; of inestimable worth; invaluable.
2. Of no value; worthless.
Having no parallel, or equal; unequaled; unmatched.
Having no rival; incomparable, supreme