砕ける
摧ける
Reading
                Kana: 
                くだける
            
                    
                Romaji: 
                kudakeru
            
            Definitions
                    1
                
                to break (into pieces); to be broken; to be smashed
                    2
                
                to collapse; to crumble; to decline; to cool (e.g. enthusiasm); to dampen (e.g. one's will to fight)
                    3
                
                to become less formal; to throw off reserve; to become affable
                            See also:  
                                                            くだけた
                                                    
                                                                            
                    4
                
                to become easy to understand (e.g. a story)
                            See also:  
                                                            くだけた
                                                    
                                                                            
                    5