When a person feels very afraid of something, he or she might panic. It’s not good to panic because extreme fear can cause a person to lose the ability to think clearly, resulting in poor decision making. When a large group of people panic all at once, it can create a dangerous situation.
Everyone panicked when they heard the alarm go off. (Notice a "k" and "ed" are added to spell the past tense.)
A fire in the auditorium caused the audience to panic. As a result, several people were trampled. (trample = crushed by the weight of others)
Please don’t panic. We’ll figure a way out of this.
If you panic, you’ll just make the situation worse.
Students panicked when they learned there was an active shooter inside the school building.
He began to panic when he found out someone was trying to hurt him.
As a noun, the word "panic" looks like this:
When water seeped into the boat, it created a feeling of panic among the passengers.
There was widespread panic after the people learned that their country had been invaded.
You can use the word "panicky" as an adjective:
Sheila feels a little panicky when she’s in a room with too many people. She has claustrophobia.
The children got a little panicky before the tornado struck.
Try not to get panicky. The police will be here soon.
He began to panic when he found out someone was trying to hurt him.