Definition of fear
an unpleasant emotion caused by the belief that someone or something is dangerous, likely to cause pain, or a threat.
The great French Revolution of 1789 struck fear into the hearts of every European ruler.
be afraid of (someone or something) as likely to be dangerous, painful, or threatening.
There had been a great burden on me all my life, to hold back, to fear death, to fear pain.
Example of fear
fear of increasing unemployment
fear of unemployment is paralysing the economy
A source close to the star told the paper: "He is in real fear for his life."
Accordingly, I find that the applicants do not have a well-founded fear of persecution.
All the time I'm either in fear of what will happen, or I think I ought to be afraid, but this morning I felt strong and resolute.
And what's the thing you most fear happening to man, with technology?
Because of the history, there is a lot of fear of what may happen.
drivers are threatening to quit their jobs in fear after a cabby's murder
Economists fear unemployment is likely to persist for longer than in previous recessions.
Far more people fear snakes than are likely to find themselves in the presence of their slippery scales.