arvoituksellinen

adjective
  1. Mysterious or enigmatic, often implying something that is difficult to understand or interpret. adjective
    The painting had an arvoituksellinen quality that intrigued all who viewed it.
    Her smile was arvoituksellinen, leaving everyone wondering what she was thinking.
  2. Puzzling or perplexing, suggesting something that is not easily solved or explained. adjective
    The detective found the case to be arvoituksellinen, with clues that led nowhere.
    The plot of the novel was arvoituksellinen, keeping readers guessing until the very end.