Adjective threepenny has 2 senses
  1. threepenny - used of nail size; 1 1/8 in long
    Antonym:
    unsized (indirect, via sized)
  2. sixpenny, threepenny, twopenny, tuppeny, two-a-penny, twopenny-halfpenny - of trifling worth
    Antonym: expensive (indirect, via cheap)
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