Bread and butter is a phrase that has been used for centuries to describe the most BASIC necessities of life. It is often used to refer to a person's livelihood, which is the 10-letter solution to this crossword puzzle. Bread and butter is also a staple food, meaning it is a 7-letter solution to the puzzle. A poem can be written about bread and butter, which is a 4-letter solution to the puzzle. Finally, a knife is often used to spread butter on bread, making it a 5-letter solution to the puzzle.