superproficient

Adjective

superproficient (comparative more superproficient, superlative most superproficient)

1. (rare) Extremely proficient.
   • Their sports are the sort that provide almost complete physical participation of all of them, instead of being overemphasized for the superproficient few.1965, George H. Walton, The Wasted Generation, Chilton Books, page 35
   • Lawrence Wolfe is superproficient not only as Walter's psychiatrist but as the 34 voices he is credited with contributing — and the rest of the cast is distinguished by the lack of self - conscious amateurism so usual in this kind of film.1967, Robert Downey, Chafed Elbows, Lancer Book, page 136