We don't have synonyms for danubian yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are manubial, daurian and janusian.
(adj) :
Pertaining to, or bordering on, the Danube river in Europe.
(n) :
(historical) A member of one of the early human cultures which were centred in the Danube basin, such as the Linear Pottery culture or the Vučedol culture.
(adj) :
Pertaining to, or bordering on, the Danube river in Europe.
(n) :
(historical) A member of one of the early human cultures which were centred in the Danube basin, such as the Linear Pottery culture or the Vučedol culture.