掉以轻心 diào yǐ qīng xīn

DEFINITIONS

  1. treat sth lightly
  2. to lower one's guard

CHARACTERS

掉 diào turn, move; shake, wag; drop down
以 yǐ by means of; thereby, therefore; consider as; in order to
轻 qīng light; easy, simple; gentle
心 xīn heart; mind, intelligence; soul