excess, surplus, superabundance...

to save, to leave over, to spare

surplus, remainder, residue...

surplus, balance

besides, moreover, in addition

besides, moreover, in addition

supernumerary, superfluous staff, excess personnel...

unnecessary expenses

surplus, balance, remainder

verbiage, wordiness, tautology...

remaining money, change

coset, residue class

surplus value (in Marxian economics)

modulo N check, residue check

surplus labor

supernumerary rainbow

surplus tile, tile that has become unnecessary to the advancement of a hand, particularly at the moment tenpai is attained

overconfident, presumptuous

excessive birth (rate)

overproduction

overcapacity

hyperconsciousness, too great a sense (of), something being only one's imagination...

oversupply (of goods, etc.), excessive supply

hyperactivity, overactivity

overacting, hamming

overpopulation

excess profit

excessive or unjustifiable self-defense (defence)

surplus population

overinvestment