We don't have synonyms for quadruman yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are quarryman, quadrumane and quadrumana.
(n) :
Alternative form of quadrumane. [(zoology, now rare) An animal having four hands and feet with opposable digits, specifically a member of the now obsolete order of mammals Quadrumana, comprising all non-human primates; a primate.]
(n) :
Alternative form of quadrumane. [(zoology, now rare) An animal having four hands and feet with opposable digits, specifically a member of the now obsolete order of mammals Quadrumana, comprising all non-human primates; a primate.]