Wiktionary, and Merriam-Webster defines it similarly. I'm too lazy to check it in a printed dictionary.
But aren't you afraid of losing something important? I always get nervous if something's on the line
If it happens, it happens. That's part of the fun. Can't let anything tie you down.
I'm probably not the only one who doesn't find it fun. I start acting reliably at times like that and that's very tiring.
Job applications are risky. Going to a new school where you might get bullied is risky. Those are "adventures" yet I doubt that a lot of people enjoy them.
AFAIK Usually people are only creative if they don't have to deal with the possibility of major loss.
They're not adventures because they're boring as hell. It's all about what you can do for the company, why you're the best fit, etc; not at all about seeing new places and meeting new people.