nervous system nervous breakdown • nest box · · · Info · Definitions · Synonyms · Characters · · nervous system · · Text Common · · Latin · · Scripts 14 · · Length Definitions · · · (noun) the sensory and control apparatus consisting of a network of nerve cells. Synonyms: systema nervosum. · · Noun Definition 1 Synonyms · · · anxious · · Synonym 1 nervous · · Synonym 2 queasy · · Synonym 3 uneasy · · Synonym 4 unquiet · · Synonym 5 neural · · Synonym 6 aflutter · · Synonym 7 skittish · · Synonym 8 flighty · · Synonym 9 spooky · · Synonym 10 Characters · · space U+0020 e latin small letter e U+0065 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 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076 y latin small letter y U+0079