heterological

/ˌhɛtərəˈlɑdʒɪkəl/
adjective
  1. Describing a word or property that does not apply to itself. For example, the word 'long' is not long, so it is heterological.
    • She gave an example of a heterological term: 'English' is not written in English letters.
    • The adjective 'polysyllabic' is heterological since it has only four syllables.
    • In logic class, we learned that 'short' is heterological because the word itself is not short.