People who act dishonestly or unfairly to gain an advantage, or glasses (slang) used to see better.
From 'cheat,' which possibly comes from Old French 'chacier' meaning 'to capture.' The slang meaning for glasses comes from 20th-century slang origins.
Academic cheating has interesting psychology—studies show that students who cheat are more stressed, not less, because they spend energy maintaining the lie and can't trust their actual knowledge.
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