Chicken Little

Informal a person who spreads baseless or exaggerated reports of danger; alarmist

Origin: after the chicken in a children's story who, after being struck by a falling object, warns that the sky is falling

See Chicken Little in American Heritage Dictionary 4

noun

A confirmed pessimist, particularly one who warns of impending disaster.

Origin:

Origin: After a character in a story who is hit on the head by an acorn and believes the sky is falling

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