softback

/ˈsɔftbæk/
noun
  1. A book with a flexible paper cover, not a hard cover.
    • I bought a softback of my favorite novel because it was cheaper.
    • She prefers softback books because they are lighter to carry in her bag.
    • The store sells both hardback and softback editions of the textbook.
Synonyms
adjective
  1. Having a flexible paper cover, as opposed to a hard cover.
    • The softback version of the guide is more affordable for students.
    • He chose the softback edition for his summer reading list.
    • Many new novels are first released in hardback, then later in softback format.