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nounsomething added to what you already have
Similar:
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nouna component that is added to something to improve ittype of:
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nouna quantity that is addedtype of:
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nounthe arithmetic operation of summing; calculating the sum of two or more numberstype of:
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nouna suburban area laid out in streets and lots for a future residential areatype of:
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nounthe act of adding one thing to anotherOpposite: