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Panic

[ˈpænɪk] · PAN-ik · English (from Greek) · noun
negativeintensity: highfear

Sudden, overwhelming, unreasoning fear that disrupts rational thought and causes frantic activity.

Definition

Sudden, overwhelming, unreasoning fear that disrupts rational thought and causes frantic activity — often contagious through a crowd.

Connotation & usage

Defined by three features: abruptness, the shutting-down of reason (it floods over you and overrides judgment), and a strong pull toward the collective and catching — often with a mismatch between trigger and reaction. This sets it apart from fright (a brief individual shock, not reason-destroying or collective) and terror (extreme in intensity but not defined by loss of reason or by crowds). Also has clinical (“panic attack”) and financial senses.

Senses & usage

The emotion

Sudden, overwhelming, unreasoning fear that disrupts thought, often spreading through a crowd.

From the Greek god Pan, blamed for the contagious, groundless fear of herds and crowds in lonely places.

Clinical (panic attack)

A discrete episode of intense fear with strong physical symptoms.

“Panic attack” dates to about 1970.

Financial panic

A wave of fear in a trading community, prompting a rush to sell.

This sense is recorded by 1757.

Related words

Etymology

1708 as a noun “sudden mass terror,” from an earlier adjective (c. 1600), from Greek panikon “pertaining to Pan,” the god held to cause mysterious, contagious, groundless fear; short for panikon deima “panic fright.”

How it has changed

Developed from an attributive adjective (“panic fear,” c. 1600) to a standalone noun (1708). Extended to finance by 1757; “panic-stricken” (1804); “panic button” figuratively (1948); “panic attack” (c. 1970).

Sources

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From The Lexicon of Feeling — a carefully sourced dictionary & thesaurus of emotions across 60 languages. Definitions are verified against the cited sources; emotion-family, valence, and intensity tags are editorial. This is a learning tool for emotional vocabulary, not therapy or a substitute for professional care. © 2026 The Lexicon of Feeling.