unclassifiable

/ʌnˈklæsɪfaɪəbəl/
adjective
  1. Impossible to put into a particular category or group; not fitting any standard classification.
    • The author's writing style is unclassifiable, defying easy labels like 'mystery' or 'romance'.
    • The creature was so strange that it seemed unclassifiable by any known species.
    • Her music is unclassifiable, blending jazz, folk, and electronic elements.
Antonyms
What does "unclassifiable" mean? | whatsthatwordmean | whatsthatwordmean