The Mysterious Story Behind AA Flight 877's Schedule and Routes We weren’t able to create a summary for you. Refresh your page to try again. May 7, 2026 · The meaning of MYSTERIOUS is of, relating to, or constituting mystery. How to use mysterious in a sentence. The costume is mysterious in its poverty as well as in its flair for incoherent details. Someone or something that is mysterious is strange and is not known about or understood. He died in mysterious circumstances. A mysterious illness confined him to bed for over a month. The whole thing … 1. involving or full of mystery: a mysterious phone call. suggesting or implying a mystery: a mysterious smile. puzzling; inexplicable: a mysterious inscription on an ancient tomb. Definition of mysterious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Apr 5, 2026 · Adjective mysterious (comparative more mysterious, superlative most mysterious) Of unknown origin.
