English definition of “fear”
› [C, U] a strong, unpleasant feeling that you get when you think that something bad, dangerous, or frightening might happen: She was trembling with fear. Unlike the rest of us, Dave had no fear of snakes. [+ (that)] There are fears that the disease will spread to other countries.
for fear of sth/doing sth › because you are worried about something/doing something: I didn't want to move for fear of waking her up.