The term CARD GAME FOR ONE can be summarized by two crossword solutions: PATIENCE (8 letters) and SOLITAIRE (9 letters). Both of these terms refer to a type of card game that is typically played by one person. PATIENCE and SOLITAIRE are both popular single-player card games that involve arranging cards in a specific order. The goal of the game is to arrange all of the cards in a certain way, such as in numerical order or by suit.