The term 'That Smarts!' is an expression used to show sympathy or understanding when someone has experienced pain or misfortune. The crossword solutions for this term are YOWIE (5 letters), YEOW (4 letters), OUCH (4 letters) and YOW (3 letters). All of these words are exclamations that are used to express pain or surprise. YOWIE is an Australian slang term, while Yeow, OUCH and Yow are more commonly used in English.