nonproficient

from The Collaborative International Dictionary of English v.0.48
nonproficient \non`pro*fi"cient\, a.
   Not proficient.
   [PJC]
    
from The Collaborative International Dictionary of English v.0.48
Nonproficient \Non`pro*fi"cient\, n.
   One who has failed to become proficient.
   [1913 Webster]
    

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