Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun underpayment

2 senses of underpayment

Sense 1
underpayment -- (a payment smaller than needed or expected)
       => payment -- (a sum of money paid or a claim discharged)

Sense 2
underpayment -- (the act of paying less than required)
       => payment, defrayal, defrayment -- (the act of paying money)