The crossword solution for the term 'It's Only Half Due' is UNO, which is a three letter word. UNO is a popular card game that was created in 1971 by Merle Robbins. The objective of the game is to be the first player to get rid of all their cards. Players take turns matching a card in their hand with the card on the top of the discard pile, either by number, color, or symbol. The first player to get rid of all their cards wins the game.