We don't have synonyms for cushite yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are kushite.
(adj) :
Pertaining to the ancient people of the Horn of Africa, historically considered the descendants of biblical Cush.
(n) :
(anthropology, dated in academic contexts) A member of one of various peoples native to the Horn of Africa, generally restricted to those that speak Cushitic languages.
(n) :
(linguistics) The Cushitic subfamily of languages.
(adj) :
Pertaining to the ancient people of the Horn of Africa, historically considered the descendants of biblical Cush.
(n) :
(anthropology, dated in academic contexts) A member of one of various peoples native to the Horn of Africa, generally restricted to those that speak Cushitic languages.
(n) :
(linguistics) The Cushitic subfamily of languages.