There are not any that I can think of.
Four letter words that end in 'isk' are disk and risk.
Courageous, headstrong, and ungoverned are some words you could use in place of risk taking.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern RISK----. That is, eight letter words with 1st letter R and 2nd letter I and 3rd letter S and 4th letter K. In alphabetical order, they are: riskiest riskless
Types of risk means definition of different types of risk by your own means to facilitate your understanding. Classification of risk means the definition of different types of risk using technical terms to standardize it for the people.
Risk off means investors want to avoid risk. Risk on means they are willing to take on more risk. It seems like a sloppy phrase , but they know what it means, and who cares about the layman anyway (lol).
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -RISK--R. That is, eight letter words with 2nd letter R and 3rd letter I and 4th letter S and 5th letter K and 8th letter R. In alphabetical order, they are: friskier
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern RISK-U-. That is, seven letter words with 1st letter R and 2nd letter I and 3rd letter S and 4th letter K and 6th letter U. In alphabetical order, they are: riskful
What this means is that the animal is at risk of becoming endangered or extinct.
The term that you're looking for is endangered. When something endangered it is at risk of being extinct.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern -RISK--. That is, seven letter words with 2nd letter R and 3rd letter I and 4th letter S and 5th letter K. In alphabetical order, they are: brisked brisken brisker brisket briskly friskas frisked frisker frisket griskin
The residual risk is the risk or danger of an action or an event
I think it means not taking unnecessary risk.