(of people) unable to express oneself clearly or easily
косноязычный
marked by ill omens or signs, especially of future misfortune or failure
неблагоприятный
happening or continuing without interruption or stopping
непрекращающийся
the harmfulness and the high contamination rate of a disease
вирулентность
a small book with a paper cover giving information about a particular subject
брошюра
someone who writes pamphlets, especially one who promotes partisan views on political issues
памфлетист
(physics) the maximum distance a vibrating material, sound wave, etc. such as a pendulum travels from its first position
амплитуда
to state publicly that one takes no responsibility for something or has no knowledge of it
отказываться
to make something known to someone or the public, particularly when it was a secret at first
раскрывать
to break the connection between people, objects, devices etc.
разъединять
doing something secretly in an attempt to avoid notice
тайный