Definition of nonesuch in English:

nonesuch

(also nonsuch)

Pronunciation /ˈnənˌsəCH/ /ˈnənˌsətʃ/

noun

  • 1archaic A person or thing that is regarded as perfect or excellent.

    utmost, optimum, last word, very limit, height, epitome, peak, pinnacle, acme, apex, apogee, zenith, culmination, perfection, nonpareil, extreme, extremity
  • 2

    another term for "black medick" (see medick)

Origin

Early 17th century coined on the pattern of nonpareil.