An untidy person is someone who is generally disorganized and messy. This can be seen in the crossword solutions for the term UNTIDY PERSON, which include SCRUFF (6 letters), SLOVEN (6 letters), SLATTERN (8 letters), FRUMP (5 letters) and SLOB (4 letters). SCRUFF is a term used to describe someone who is unkempt and disheveled in appearance. SLOVEN is someone who is careless and negligent in their habits. SLATTERN is someone who is untidy and slovenly in their behavior. FRUMP is someone who is dowdy and unfashionable in their dress. Finally, SLOB is someone who is lazy and sloppy in their habits.