shape-up
Americannoun
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an act or instance of shaping up.
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a former method of hiring longshoremen in which the applicants appeared daily at the docks and a union hiring boss chose those who would be given work.
verb
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informal to proceed or develop satisfactorily
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informal to develop a definite or proper form
noun
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Turn out, develop; see take shape .
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Improve so as to meet a standard, as in The coach told the team that they'd better shape up or they'd be at the bottom of the league . This usage was first recorded in 1938.
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shape up or ship out Behave yourself or be forced to leave, as in The new supervisor told Tom he'd have to shape up or ship out . This expression originated in the 1940s, during World War II, as a threat that if one didn't behave in an appropriate military manner one would be sent overseas to a combat zone. After the war it was transferred to other situations calling for improved performance.
Etymology
Origin of shape-up
First recorded in 1940–45; noun use of verb phrase shape up
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.