crookbacked s characteristic of or suffering from kyphosis, an abnormality of the vertebral column Usage(s) There, amidst moaning victims, clanking chains and chopping blocks, Villain Rathbone (the crookbacked Richard, Duke of Gloucester) shows Monster Karloff (Mord, the club-footed . Synonym(s) crookback humped humpbacked hunchbacked gibbous kyphotic