break a leg
Superstition against wishing an actor Good Luck! has led to the adoption of this phrase in its place. The date of origin is a bit obscure; as theatrical slang it existed long before it was ever documented in print, but the intent of the phrase is clear. It is simply a way of warding off a jinx. It being bad luck to speak of a positive performance, one instead speaks of a bad one.
Based on the recollections of actors, break a leg is commonly thought to date to the 1930s. Some claim a British origin, but the earliest citations are all American.1 The earliest actual appearance in print that anyone has found is from 1957, from the 29 May Associated Press wire service story about a dancer who literally broke her leg during a performance:
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In the theater, they say “break a leg” to an actor just before he goes on stage, but it really means “good luck.”2
Copyright 1997-2013, by David Wilton