The term 'tightly curled, as hair' can be described by two crossword solutions: KINKY (5 letters) and FRIZZY (6 letters). KINKY hair is characterized by tight curls that are usually very small in size and often have a shiny texture. FRIZZY hair is characterized by loose, undefined curls that are often dry and lack shine. Both types of hair are often difficult to manage and require special care to maintain their shape.