sudden

an unexpected alteration in condition, situation, or course

an unexpected and rapid death

внезапное движение

a quick, unexpected change in position

быстрое, неожиданное изменение положения

an unexpected, quick movement or change in position or direction

внезапное нападение

an abrupt and violent act of aggression

резкий и насильственный акт агрессии

an unexpected and serious situation requiring immediate action

a short, abrupt pull or twist

внезапная трансформация

a rapid and complete change in form, appearance, or character

описывает трансформацию, которая происходит быстро и неожиданно

a fierce and destructive attack that begins unexpectedly

a formal term for an unexpected and rapid end, especially of a person or institution