He died in mysterious circumstances. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Enigmatic, puzzling, or difficult to understand or explain. Someone or something that is mysterious is strange and is not known about or understood. Untraceable he received a mysterious phone call this morning. The meaning of mysterious is of, relating to, or constituting mystery. To talk or behave in a way that makes other people feel that you must have a secret A mysterious disease. As, a mysterious look; A mysterious illness confined him to bed for over a month. Definition of mysterious adjective in oxford advanced learners dictionary. Mysterious, inscrutable, mystical, obscure refer to that which is not easily comprehended or explained. How to use mysterious in a sentence. · adjective mysterious (comparative more mysterious, superlative most mysterious) of unknown origin. Expressing, intimating, or implying a mystery: Strange, unknown, or difficult to understand; Inscrutable applies to that which is impenetrable, so enigmatic that one cannot interpret it: This is reminiscent of the extraordinary relationship which amputees develop with their artificial replacements, revealing a whole inner mysterious world of feeling and imagination. From the gnu version of the collaborative international dictionary of english. His manner was very mysterious and important. That which is mysterious, by being unknown or puzzling, excites curiosity, amazement, or awe: That which is mysterious, by being unknown or puzzling, excites curiosity or awe: See example sentences, synonyms, and etymology for the adjective mysterious.