extra (charge, fare, etc.); premium; bonus; (after a number) tenths increase
salary supplement, e.g. for work performed at inconvenient times or as overtime allowance usually for so-called exempt workers, i.e. workers who are expected to work a certain number of overtime hours
tightening (bolt, nut, etc.); retorquing
accidental death rider (insurance term); AD; accidental death benefit rider
additional depreciation deduction