mental institution mental imagery • mentalis · · · Info · Definitions · Synonyms · Characters · · mental institution · · Text Common · · Latin · · Scripts 18 · · Length 6 · · Syllables Definitions · · · (noun) a hospital for mentally incompetent or unbalanced person. Synonyms: mental hospital, psychiatric hospital, mental institution, institution, mental home, insane asylum, asylum. · · Noun Definition 1 Synonyms · · · mental hospital · · Synonym 1 psychiatric hospital · · Synonym 2 institution · · Synonym 3 mental home · · Synonym 4 insane asylum · · Synonym 5 asylum · · Synonym 6 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075