Polyandrous rhymes with:
andrus, cassandras, landrus, andras, andrus, cassandras, landrus, wondrous, ambassadress, andras, andrus, cassandras, hydrous, landrus, madras, wondrous
andrus, cassandras, landrus, andras, andrus, cassandras, landrus, wondrous, ambassadress, andras, andrus, cassandras, hydrous, landrus, madras, wondrous