to do something secretly without their knowledge
делать что-то тайно, не зная этого (delat' chto-to tayno, ne znaya etogo)
"She was talking about me behind my back."
"Она говорила обо мне за моей спиной." (Ona govorila obo mne **za moyey spinoy**.)
a story about someone's misfortune
to gain access to a computer or system
to misunderstand each other when talking about different thi...
to start behaving more responsibly.
to spend a lot of money in a short period of time
to think of something briefly
