To try to achieve something with confidence.
Попытаться достичь чего-то с уверенностью. (Popytatsya dostich' chego-to s uverennost'yu.)
"If you really want that job, go for it!"
"Если ты действительно хочешь эту работу, дерзай!" (Yesli ty deystvitel'no khochesh' etu rabotu, derzay!)
to start something that causes many unforeseen problems
a little stupid or crazy
the skill of doing something well
to reject something by voting against it
a strong motivation to achieve something
the trace of information left by a user's online activities