Hoarder's Problem is a condition in which an individual accumulates and stores a large amount of items, often to the point of creating CLUTTER and MESS. The two crossword solutions for this term are 'CLUTTER' (7 letters) and 'MESS' (4 letters). CLUTTER is defined as a collection of objects that are not organized or arranged in an orderly way, while MESS is defined as a state of disorder or untidiness. Both of these words accurately describe the living conditions of someone with Hoarder's Problem.