subnormal subnivean • subnormality · · · Info · Definitions · Characters · · subnormal · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a person of less than normal intelligence. · · Noun Definition 1 (adj) below normal or average. Examples: "After the floods the harvests were subnormal." "Subnormal intelligence." · · Adjective Definition 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 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 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075