High-risk in a sentence as an adjective

My transaction was deemed "high-risk" and the order was cancelled.

Eva added that "because L'Aquila is in a high-risk zone it is impossible to say with certainty that there will be no large earthquake".

Then Square deactivated her account, saying "high-risk activity was detected.

Government pays for really big long-term high-risk core technology development.

I remember reading this published insight[1] from Marissa Mayer a few months ago:Burnout is caused by resentmentWhich sounded amazing, until this guy who dated a neuroscientist commented[2]:No. Burnout is caused when you repeatedly make large amounts of sacrifice and or effort into high-risk problems that fail.

High-risk definitions

adjective

not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises"

See also: risky speculative