The definition of antilogy is an opposition in thoughts, views, statements, and/or words.(noun)
An example of an antilogy is the word “clip” which on one hand can mean “bring together” as in a hair clip or barrette, and on the other hand it can also mean “to separate” as in clip hair with a scissors.
See antilogy in Webster's New World College Dictionary
noun pl. antilogies
Origin: Gr antilogia: see anti- & -logy