Where does “cheat sheet” come from?

cheat sheet (English) comes from English cheat, from Middle English chete, from Middle English achete, from Middle English eschete, from Old French eschet, from Old French escheoir, from Latin excadēre, from Latin cadēre — to fall.

cheat sheet (English): A sheet of paper (or a digital analogue thereof) containing notes used to assist (with or without permission) on a test; especially, such a sheet used secretly and improperly

Definitions

  1. A sheet of paper (or a digital analogue thereof) containing notes used to assist (with or without permission) on a test; especially, such a sheet used secretly and improperly

Ancestry of “cheat sheet”, step by step

cheat sheet traces back through two separate lines of ancestry.

via English cheat

StepLanguageWordMeaning
1EnglishcheatTo violate rules in order to gain advantage from...
2Middle Englishchetecottage
3Middle EnglishacheteEscheat; the acquisition of property left without an inheritor
4Middle EnglishescheteThe taking of property from a feudal subject due to extinction of their line or crimes committed; escheat
5Old Frencheschet
6Old Frenchescheoirto fall; to happen
7Latinexcadērefall out
8Latincadēre
9Latincadōto fall, to fall out
10Proto-Italickadōfall, sink
11Proto-Indo-Europeanḱad-to fall

via English sheet

StepLanguageWordMeaning
1EnglishsheetA thin bed cloth used as a covering for a...
2EnglishshitSolid excretory product evacuated from the...
3Middle Dutchschite
4Old Dutchskīta
5Old Saxonskiti
6Proto-Germanicskītaz
7Proto-Indo-Europeansḱeyd-to shade; to cut off; to part with, separate, cut...
8Proto-Indo-Europeansḱēy-to shine; to shimmer; shadow; luster, gloss,...
9Proto-Germanicskaidąseparation, distinction
10Proto-Indo-EuropeanskÁit-to cut, part, spearate, divide; to cut, part,...
Every word from Proto-Indo-European ḱad-Every word from Proto-Italic kadōEvery word from Latin cadō