D defs.my
Entry 1 sense Webster, 1913

Antiphrasis

· An·tiph·ra·sis · IPA /ænˈtɪfrəsɪs/
01 n. The use of words in a sense opposite to their proper meaning; as when a court of justice is called a court of vengeance.
  1. 1.
    The use of words in a sense opposite to their proper meaning; as when a court of justice is called a court of vengeance.(Rhet.)