ADJ-GRADED 不吸引人的;其貌不扬的 If you describe someone or something as unprepossessing, you mean that they look rather plain or ordinary, although they may have good or special qualities that are hidden. 不吸引人的;其貌不扬的 [formal]
We found the tastiest and most imaginative paella and tapas in the most unprepossessing bars and cafés.