un·sur·pass·able \|ənsər|pasəbəl, -paas-, -pais-, -pȧs-\adjective Etymology:un- (I) + surpass + -able : incapable of being surpassed : not to be exceeded < was hailed with unsurpassable enthusiasm — Fred Whishaw > < unsurpassable standards of workmanship > < unsurpassable skill > • un·sur·pass·ably\-blē, -li\adverb