Key
Example: This factor is key to success
Definition
"Key" refers to something that is crucial or essential in achieving a particular result or understanding a situation. It often describes a factor, element, or piece of information that plays a decisive role, as in the phrase 'This factor is key to success.'
Etymology
The word "key" originates from the Old English 'cæg,' related to similar words in other Germanic languages. It originally referred to a physical instrument used to open locks, symbolizing access or control. Over time, "key" evolved metaphorically to mean anything that provides a solution, explanation, or critical importance.
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"Key" appears in the Vocaplus list "English - General - (B2) - set 2", containing 112 commonly used words.
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