If it's New York, then it's New Yorker
If it's London, then it's Londoner, and so on...
In India, it's Mumbaikar for Mumbai but Delhiite for Delhi. In short, difficult to guess! Some times such terms take 'ker,' some times, 'ner..' and so on.
But how do I form such words if I have no time to search on the Internet? Say, while explaining about the habit of people from a particular city.
Is there any rule? Or at least a trick?
What about Amsterdam? Sydney? Tokyo? Shanghai? The list is endless!