If you describe something as tatty, you think it is untidy, rather dirty, and looks as if it has not been cared for. a very tatty old bathrobe. = scruffy. in bad condition = shabby (tat (19-20 centuries))
tastelessly showy; "a flash car"; "a flashy ring"; "garish colors"; "a gaudy costume"; "loud sport shirts"; "a meretricious yet stylish book"; "tawdry ornaments"