The term 'burn completely' can be broken down into four crossword solutions: CHAR (4 letters), SEAR (4 letters), SINGE (5 letters), and ALOE (4 letters). Charring is the process of burning something until it is blackened and brittle. It is usually done to food, such as steak, to give it a smoky flavor. Searing is a cooking technique that involves quickly cooking food at a high temperature in order to seal in the juices. Singeing is the process of lightly burning something, such as hair, to remove the ends. Aloe is a plant that is often used to soothe burns.