We don't have synonyms for epher yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ether, ephor and upher.
(N) :
(also Ephera'im or Effrain, (ʿĒp̄er)) a grandson of Abraham, according to Gen. 25:4, whose descendants, Jewish historian Flavius Josephus claimed, had invaded Libya.
(N) :
(also Ephera'im or Effrain, (ʿĒp̄er)) a grandson of Abraham, according to Gen. 25:4, whose descendants, Jewish historian Flavius Josephus claimed, had invaded Libya.