The Collaborative International Dictionary
                    Uglify
                    
                        
                
                                                                    Uglify \Ug"li*fy\, v. t. [Ugly + -fy.]
   To disfigure; to make ugly. [R.] 
--Mad. D'Arblay.
Douglas Harper's Etymology Dictionary
                    uglify
                    
                        
                
                                                                    1570s; see ugly + -fy. Related: uglified; uglifying.
Wiktionary
                    uglify
                    
                        
                
                                                                    vb. 1 (context transitive English) To make ugly; to destroy or worsen the appearance or attractiveness of. 2 (context intransitive English) To become ugly.
WordNet
Usage examples of "uglify".
Cadillac Cimarron I am stupid enough to pay extra money for an uglified Chevrolet.
Edge's uglifying smile was gone, and he looked pleasant again—but he did not act so.