unsurˈpassed,ppl.a. (un-1 8.) [1775Ash.]1818Byron Ch. Har. iv. xxxix, Oh, victor unsurpass'd in modern song!1840Thackeray Barber Cox Nov., A speech..unsurpassed for eloquence.1882Nature XXV. 429 On such a topic he is entitled to speak with at least an unsurpassed authority.