murphys first law

Murphy's Law

noun
the facetious proposition that if something can go wrong, it will.
Also called Murphy's First Law.


Origin:
Americanism; after a fictitious Murphy, allegedly the name of a bungling mechanic in U.S. Navy educational cartoons of the 1950s

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World English Dictionary
Murphy's law
 
n
informal another term for Sod's law
 
[C20: of uncertain origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

Murphy's law
1958, used of various pessimistic aphorisms. If there ever was a real Murphy his identity is lost to history. Said to be military originally, and probably pre-dates the earliest printed example (the 1958 citation calls it "an old military maxim").
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Cultural Dictionary

Murphy's Law definition


A rule that states, “If something can go wrong, it will.” An addition to this law reads, “and usually at the worst time.” The identity of “Murphy” is unknown, but the saying was first used during the 1940s and may have originated with members of the armed forces in World War II.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
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