The term 'BE FRIGHTENED' can be summarized by the four-letter word 'FEAR'. FEAR is an emotion that is experienced when a person is faced with danger or the threat of harm. It is a natural response to a perceived threat and can cause physical reactions such as increased heart rate, sweating, and trembling. FEAR can also lead to avoidance behavior, which can prevent people from taking risks or engaging in activities that could potentially benefit them.