Dead Wrong

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Meaning of Idiom 'Dead Wrong'

To be dead wrong means to be or completely wrong. 1


"I thought he was the right choice for the job but I was dead wrong."

"I know I was dead wrong but I was given incorrect information.


Used since the late 1800's.

Here, the word dead is used to mean completely or extremely, a usage that began in the 1600's. 2, 3

1. Spears, Richard A. McGraw-Hill's American Idioms Dictionary. Boston: McGraw Hill, 2008.
2. McIntosh, Colin. Cambridge Advanced Learner's Dictionary. Cambridge University Press, 2013.
3. Ammer, Christine. American Heritage Dictionary of Idioms. Boston: Houghton Mifflin Harcourt, 2013.

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