1. Showing signs of wear and tear
   "a ratty old overcoat";
   - moth-eaten, shabby, tatty [informal], grotty [Brit, informal]
    
2. Of or characteristic of rats
   "The ratty smell in the basement indicated a rodent infestation"
    
3. Dirty and infested with rats
   "The abandoned warehouse had a ratty appearance"

Derived forms: rattier, rattiest

See also: dirty, soiled, unclean, worn

Encyclopedia: Ratty