The term "bigger half" implies a portion that is greater than half, but what if we need to refer to the smaller portion? The antonym for bigger half is smaller half. This phrase is used when describing a division that is not equal, but where the smaller portion still holds significance. For example, if two people split a pizza and one person takes three slices while the other takes two, the person with two slices would have the smaller half. The term can also be used in a metaphorical sense, such as when referring to a relationship where one partner has more power or control than the other.