Nebulous comes from the Latin word nebula, meaning “cloud” or “fog.” In English, it has been used since the early 17th century to describe something that is hazy, vague, indistinct, or confused. Nebulous can be used to describe a wide range of things, from ideas and concepts to physical objects and phenomena. Today, nebulous remains a commonly used word in English, and is often associated with uncertainty or ambiguity.
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