Once, Twice, Thrice

Found AskOxford.com tonight.  We were wondering if there was anything after Thrice.  Apparently not.  This site answers this and lots of other fun questions like:

• Apart from 'angry' and 'hungry', what other common English word ends in '-gry'?
• Female cattle are cows, male cattle are bulls. But what is the word for an individual of arbitrary sex here?
• What is the origin of the term 'dressed to the nines'?
• and so on...