to promise solemnly, often in a formal way
клясться, часто в официальной форме (klyatsya, chasto v ofitsial'noy forme)
"He swore an oath to serve his country faithfully."
"Он принял клятву служить своей стране верно." (On **prinyal klyatvu** sluzhit' svoey strane verno)
to make someone understand what you mean
no longer involved or relevant
a sudden realization or idea
to become very excited or angry
someone who loves going to parties
to forget what you were thinking or saying