noun, (used with a plural verb) Slang.
1. a condition of extreme nervousness caused by fear, worry, strain, etc.; the jitters; the willies (usually preceded by the): Just thinking about ghosts gives me the heebie-jeebies.
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Origin: An Americanism dating back to 1905-10; rhyming compound coined by W. De Beck (1890-1942), American comic-strip cartoonist
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