noun / verb / adjective
panic
PAN-ik/ˈpænɪk/
Sudden overwhelming fear or anxiety.
The woman panics at the sudden flare-up and backs away.

Etymology
Panic originally described fear associated with Pan, whose mysterious woodland sounds were believed to spread groundless terror. The adjective “of Pan” became a name for sudden, overwhelming fright.
In context
a panic attack— a sensation so overwhelming, many people mistake it for a heart attack, stroke, or other life-threatening crisis.
More examples
- The unexpected noise caused panic.
- They have panicked over false alarms before.
- A panic reaction made the task harder.
Forms
panic · panics · panicked · panicking
panicky adjective — Prone to sudden overwhelming fear.