I think axiom should fit, but according to its official definition, an axiom is a statement that is taken to be true, and as far as I know, a word can’t make an statement by its own.

  • Barky@lemmy.zipEnglish
    10·
    1 year ago

    Axiomatic is pretty good. Irreducible is another. However, I would argue there are no undescribable words. If that were true, no one could learn certain words in other languages