secretly; in a sneaky way
тайно; хитрым способом (tayno; khitrym sposobom)
"He met her on the sly without telling anyone."
"Он встретил её тайно, не сказав никому." (On vstretil yeё **tayno**, ne skazav nikomu.)
to formally approve something
to be experiencing a period of bad luck
to mark the beginning and end of something
to reduce the size or amount of something
to be nervous, tense, or irritable
to set a limit on what is acceptable