cheat sheet
Americannoun
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a sheet of paper or a digital document containing information used by a student for cheating on an exam or in the classroom.
She had a cheat sheet for the history test with a list of the correct answers.
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a document containing notes or other aids used as a reference in studying or remembering certain information.
I used a cheat sheet with statistics and bar graphs to prepare for my radio interview.
Etymology
Origin of cheat sheet
First recorded in 1935–40
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.