contranymy

From contra- +‎ -nymy.

contranymy (uncountable)

1. Alternative form of contronymy
   • 1996, The Journal of the Association of Graduates in Near Eastern Studies:

     In that light Noegel might want to consider Janus parallelism as an intersecting set with contranymy.

   • 2015, Saskia Peels, “The Semantic Paradox”, in Hosios: A Semantic Study of Greek Piety:

     There are cross-linguistic examples of words that allegedly mean x and the opposite of x; this phenomenon would be a facet of polysemy and is commonly referred to as auto-antonymy or contranymy.