This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Not bound between hard covers: softbound books.

adj. With a cover of flexible paper rather than a rigid cardboard cover.

"It is usually softbound in wrappers, which may be similar to dust jacket art of the first trade edition, and occasionally there are textual differences between an advance review copy and a first edition."

hardcovered    hardback   

paperback