ugly: may apply not only to what is not pleasing to the eye but to what offends another sense or gives rise to repulsion, dread, or moral distaste in the mind: a street of small drab ~ houses.


hideous: stresses personal reaction and the horror of loathing induced by something felt as outwardly or inwardly extremely ugly: a hurricane that caused ~ destruction.  （loathe厌恶，表示感到非常恶心无法容忍implies utter disgust and intolerance,如loathe self-appointed moral guardians厌恶自封的卫道士，形容词是loath，如loath to believe that he could do anything right不愿相信他能做对事）


ill-favored: applies especially to personal appearance and implies ugliness to the sense of sight without in itself suggesting a resulting distaste or dread: self-conscious about his ~ features.


unsightly: is likely to refer to a material thing on which the eye dwells on without pleasure and connotes a suggestion of distaste: a dump that sat on a ~ blot on the landscape.  （material 1物质的有形的 2和精神对立的，表示由可触摸的材料构成implies formation out of tangible matter; or a contrast to spiritual, ideal. 如玛丽莲梦露《钻石是女孩最好的朋友diamonds are a girl's best friend》歌词，this is a material world, and I am a material girl，第一个material是意思1表示由物质构成，第二个是意思2表示追求物质，唯物主义materialism的反义词是idealism唯心论）


ugly丑陋厌恶: 不仅外表不好看，而且冒犯其它感觉，使人排斥害怕讨厌，hideous丑陋可怖: 强调给人的反应，表示极端丑陋，让人感到厌恶可怖 ，ill-favored相貌难看: 多形容人相貌难看(丑陋)，但本身没有厌恶害怕的意思，unsightly事物难看: 多形容有形事物难看，让人讨厌


记忆方法: 1）首字母UHIU想成有灰<==丑陋


         2）丑陋的意思是既不宜人也不美丽mean neither pleasing nor beautiful, especially to the eye.