We don't have synonyms for madaba yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are madiba, madala and gadaba.
(N) :
(Biblical Hebrew: Mēḏəḇāʾ; Stephanus of Byzantium, Ethnica, § M449.6Flavius Josephus, Antiquitates Judaicae, § 13.15.4Stephanus of Byzantium, Ethnica, § G203.15) the capital city of Madaba Governorate in central Jordan, with a population of about 60,000.
(N) :
(Biblical Hebrew: Mēḏəḇāʾ; Stephanus of Byzantium, Ethnica, § M449.6Flavius Josephus, Antiquitates Judaicae, § 13.15.4Stephanus of Byzantium, Ethnica, § G203.15) the capital city of Madaba Governorate in central Jordan, with a population of about 60,000.