to feel extremely nervous or anxious
чувствовать себя очень нервным или тревожным (chuvstvovat' sebya ochen' nervnym ili trevozhnym)
"I always get the jitters before a big meeting."
"Я всегда чувствую нервозность перед важной встречей." (ya vsegda **get the jitters** pered vazhnoy vstreche)
to improve or advance to a higher level
to suddenly think of a good idea
to suffer the consequences of one’s actions
to be extremely jealous or angry with someone
to take a short break from a situation
to smile widely with great happiness