Badly worn (6)
(Other definitions for tatty that I've seen before include "In poor condition" , "Frayed" , "dishevelled" , "Showing signs of wear and tear" , "Shabby, in a worn state" .)
(Other definitions for threadbare that I've seen before include "Thin, tattered, worn out" , "Shabby" , "Frayed" , "Ragged" , "poor" .)
(Other definitions for ragged that I've seen before include "Wearing torn clothes or lacking smoothness" , "Frayed or lacking smoothness" , "Unkempt" , "Scruffy" , "Threadbare" .)