Definition
Certainty refers to the quality of being reliably true, without doubt, or absolutely sure about something. It is often associated with facts, knowledge, or beliefs that are believed to be irrefutable or universally accepted.
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Etymology
The word "certainty" originates from the Old French word "certeineté," which is derived from the Latin "certus," meaning "sure" or "settled." The term entered Middle English in the 14th century, carrying the sense of something established or assured as a truth.
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Usage
The noun "certainty" is often used to describe situations, beliefs, or facts that are known or understood without question. For example, "There is no certainty about the future of the project," or "The certainty of her success was evident to everyone." It is commonly used in philosophical, scientific, and everyday contexts to refer to things that are believed to be absolute or guaranteed.
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