1. Exceeding a fixed, prescribed, or standard number; extra. 2. Exceeding the required or desired number or amount; superfluous. See synonyms at superfluous.
NOUN:
Inflected forms: pl. su·per·nu·mer·ar·ies 1. One that is in excess of the regular, necessary, or usual number. 2. An actor without a speaking part, as one who appears in a crowd scene.
ETYMOLOGY:
Latin supernumerrius : super, above; see super + numerum, accusative of numerus, number; see nem- in Appendix I.