antĭphrăsis (better written as Gr.), is, f., = ἀντίφρασις,
the use of a word in a sense opposite to its proper meaning; as, lucus , quod minime luceat, Diom. p. 458 P.; cf. Charis. p. 247 P. al.
·noun The use of words in a sense opposite to their proper meaning; as when a court of justice is ca...
Webster's Dictionary of the English Language