1. (a.) Not commensurable; having no common measure or standard of comparison; as, quantities are incommensurable when no third quantity can be found that is an aliquot part of both; the side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable.

2. (n.) One of two or more quantities which have no common measure.

abnormal absurd alien anomalous apart detached disconnected discrete disjunct disproportionate disrelated dissimilar dissociated exotic extraneous foreign incoherent incommensurate incomparable incompatible incongruous inconsequent inconsistent inconsonant independent insular irreconcilable irrelative isolated not comparable to of different orders other out of proportion outlandish oxymoronic paradoxical removed segregate self-contradictory separate separated strange unaffiliated unallied unassociated unconnected unlike unrelatable unrelated