Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun hardback

1 sense of hardback

Sense 1
hardback, hardcover -- (a book with cardboard or cloth or leather covers)
       => book, volume -- (physical objects consisting of a number of pages bound together; "he used a large book as a doorstop")

Antonyms of adj hardback

1 sense of hardback

Sense 1
hardbacked, hardback, hardbound, hardcover -- (having a hard back or cover; "hardback books")

INDIRECT (VIA backed) -> backless -- (lacking a back; "a stool is a backless and armless seat")

Similarity of adj hardback

1 sense of hardback

Sense 1
hardbacked, hardback, hardbound, hardcover -- (having a hard back or cover; "hardback books")
       => backed (vs. backless) -- (having a back or backing, usually of a specified type)