to be afraid; to be scared

I am afraid of what the teacher will say.

Don't be afraid to ask questions.

She won't take an airplane for fear of a crash.

He began to feel afraid.

It's the answer that led those who've been told for so long, by so many, to be cynical and fearful and doubtful about what we can achieve, to put their hands on the arc of history and bend it once more toward the hope of a better day.