The term 'How Dare You!' can be expressed in a crossword puzzle with the solutions SLAP (4 letters), INEVER (6 letters), and WELLINEVER (10 letters). The phrase 'How Dare You!' is an expression of shock or outrage, usually used when someone has done something wrong or inappropriate. The solutions to the crossword puzzle are all variations of this phrase, with SLAP being a shortened version, INEVER being a combination of 'I' and 'NEVER', and WELLINEVER being a combination of 'WELL' and 'NEVER'.