The term 'facepalm' is an expression used to indicate embarrassment or frustration. It is often accompanied by the physical gesture of placing one's palm on one's face. The crossword solutions for this term are 'Duh' (3 letters), 'Doh' (3 letters), and 'SoDumb' (6 letters). These words are all slang terms that are used to express disbelief, disappointment, or exasperation. They are often used in response to someone else's mistake or foolishness.