Việt
thừa
dư
vô ích
dư lại
thừa dư
từ mã hiệu dư thừa
Anh
superfluous
profitless
residuary
residual
redundant code word
surplus
superfluous /toán & tin/
thừa, dư, vô ích
profitless, superfluous
residuary, superfluous
residual, superfluous
redundant code word, superfluous, surplus