The term 'Kitchen Add-On' can be summarized by two crossword solutions: 'ette' (4 letters) and 'DINETTE' (7 letters). An 'ette' is a diminutive suffix used to create a feminine form of a word, such as kitchenette. A kitchenette is a small kitchen area, usually found in a studio apartment or other small living space. A DINETTE is a dining area, typically found in a kitchen. It is usually a small table with chairs, and may also include a bench or booth.