Possible Clues:

• Language in which 'k' and 'v' are the words for 'to' and 'in'
• Ostrava resident
• European's method of payment or audit, say
• European method of payment's sound
• Reportedly attack king as citizen of republic
• Soundly examine a European language
• European payment taken on the phone?
• Austrian's northern neighbor
• Like polka
• One way to pay*