Not decorous; violating good manners; contrary to good breeding or etiquette; unbecoming; improper; out of place; as, indecorous conduct.
                                                            
                                                     
                        
                                                
                        
                        
                            lacking propriety and good taste in manners and conduct; "indecorous behavior" 
                                                            
                                                     
                        
                                                
                        
                        
                            not in keeping with accepted standards of what is right or proper in polite society; "was buried with indecent haste"; "indecorous behavior"; "language unbecoming to a lady"; "unseemly to use profanity"; "moved to curb their untoward ribaldry"