The term 'ponied up' is an idiom meaning to pay or contribute money. The crossword solutions for this term are AHORSE (6 letters), ANTED (5 letters), and PAID (4 letters). AHORSE is a reference to the phrase 'putting one's money where one's mouth is, ' which is another way of saying that someone is willing to back up their words with action. ANTED is a reference to anteing up, which is a phrase used in poker to mean that a player is putting money into the pot. Finally, PAID is a reference to paying up, which is the act of settling a debt or obligation.