From Longman Dictionary of Contemporary Englishunprepossessingun‧pre‧pos‧sess‧ing /ˌʌnpriːpəˈzesɪŋ/ adjective formal ATTRACT#not very attractive or noticeable Despite his unprepossessing appearance, he was very popular with women.
Examples from the Corpus
unprepossessing• In appearance he was singularly unprepossessing.• To top this unprepossessing appearance was a thin, scrawny neck which seemed only just to support the weight of his head.• Jim's is an unprepossessing corner cafe-shabby furniture, steamy windows, pine tongue-and-groove walls.• The door was swung open by an unprepossessing man of middle stature, creamy-faced, and merry-eyed.• The ferry was the most unprepossessing sea vessel I've ever seen.• The book contains 58 photographs of this unprepossessing site.• His writing-room on the first floor contains an unprepossessing table and a sideboard, on which sit his word-processor and printer.• When first surveyed, a few years ago, it had rendered outer walls and unprepossessing windows. 