(a.) Worthy of observation or notice; remarkable.

absolute appalling astonishing celebrated certain concrete conspicuous defined definite detailed determinate different distinct distinguished egregious eminent esoteric estimable evident exceptional express extraordinary fabulous fantastic fixed formidable incredible indescribable individual ineffable inner intimate legendary manifest marked marvelous memorable minute mythical noble notable noticeable observable of mark outstanding particular patent personal phenomenal portentous precise prestigious private prodigious prominent rare red-letter remarkable rememberable reputable respective rubric salient several signal singular solipsistic special specific striking stupefying stupendous superior telling uncommon unexampled unforgettable unique unparalleled unprecedented unspeakable unusual wonderful