The term 'up for payment' is composed of three words: DUE, up, and payment. The first word, DUE, is a three-letter word meaning 'owing or payable at a specified time.' The second word, up, is an adverb meaning 'in a higher position or toward a higher level.' The third word, payment, is a noun meaning 'the act of paying money.' Together, the phrase 'up for payment' means that something is owed and needs to be paid in order to be settled.