[{"Bold_text": "adjective", "List Items": ["without the faculty of reason; deprived of reason.", "without or deprived of normal mental clarity or sound judgment.", "not in accordance with reason; utterly illogical:irrational arguments.Synonyms: insensate , ridiculous , unreasonable", "not endowed with the faculty of reason:irrational animals.", "Mathematics.(of a number) not capable of being expressed exactly as a ratio of two integers.(of a function) not capable of being expressed exactly as a ratio of two polynomials.", "(of a number) not capable of being expressed exactly as a ratio of two integers.", "(of a function) not capable of being expressed exactly as a ratio of two polynomials.", "Algebra.(of an equation) having an unknown under a radical sign or, alternately, with a fractional exponent.", "Greek and Latin Prosody.of or relating to a substitution in the normal metrical pattern, especially a long syllable for a short one.noting a foot or meter containing such a substitution.", "of or relating to a substitution in the normal metrical pattern, especially a long syllable for a short one.", "noting a foot or meter containing such a substitution."]}, {"Bold_text": "noun", "List Items": ["Mathematics. irrational number(def) irrational number(def)."]}]