supernumerary,

supernumerary /ˌsuːpəˈnjuːmərəri/ DJ /ˌsjuː-/ DJ /ˌsuːpərˈnuːməreri/ DJ US /ˈsupɚ'numəˈrɛrɪ/ KK US


1.more than you normally need; extra 多餘的；過剩的；額外的 adjective rare formal
 
英文字典


su·per·nu·mer·ar·y

1.Present in excess of the normal or requisite number, in particular

2.(of a person) Not belonging to a regular staff but engaged for extra work

3.Not wanted or needed; redundant

同義字


adjective: extra, additional, odd, superfluous, redundant

noun: extra