The term 'creepy thing' can be summarized by three crossword solutions: VINE (4 letters), MOSS (4 letters), and SNAIL (5 letters). Vines are plants that grow by winding around other plants or structures, often in a tangled or twisted manner. MOSS is a type of small, soft plant that grows in clumps or mats in damp or shady locations. Snails are slimy, slow-moving mollusks that have a shell on their back. All three of these creatures are often considered creepy due to their strange appearance and movements.