Threadlike is a term used to describe something that is THIN and long, like a thread or string. The crossword solutions for this term include FILAMENTOUS (11 letters), FIBROUS (7 letters), THIN (4 letters), FILAR (5 letters), WISPY (5 letters), and FILOSE (6 letters). All of these words describe something that is THIN and long, like a thread or string. The word FILAMENTOUS specifically refers to something that is composed of filaments, which are very THIN strands of material. FIBROUS describes something that is made up of fibers, which are very THIN strands of material. THIN is a general term for something that is not thick or wide. FILAR and WISPY both refer to something that is THIN and light, like a wisp of smoke or a strand of hair. Finally, FILOSE is a term used to describe something that is composed of fine threads or filaments.