a.
1.
Supereminent, transcendent, pre-eminent, surpassing, supreme, consummate.
2.
( Colloq. ) Obscure, dark, vague, indefinite, speculative, mystic, mystical, fantastic, filmy, thin, abstruse, indistinct, rarefied, attenuated, unreal, intangible, impalpable, recondite.
3.
( Math. ) Non-algebraic, extra-algebraic, involving other than the four fundamental operations.
4.
( Met. ) a. A priori , pure, organic, primordial, original, aboriginal, formal, formative, constitutive, relating to form as distinguished from matter, non-empirical. b. Synthetical, combinative, unitive, unifying, unificatory, colligative, constructive of system in experience, warranting inference from the past to the future. c. Non-transcendent, immanent, limited to experience, applicable to phenomena alone, inapplicable to the absolute, to noumena, to the supersensible, or to things in themselves.