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Definitions

idea

[ahy-dee-uh, ahy-deeuh] / aɪˈdi ə, aɪˈdiə /


Usage

What are other ways to say idea? The noun idea, although it may refer to thoughts of any degree of seriousness or triviality, is commonly used for mental concepts considered more important or elaborate: We pondered the idea of the fourth dimension. The idea of his arrival frightened me. Thought, which reflects its primary emphasis on the mental process, may denote any concept except the more weighty and elaborate ones: I welcomed his thoughts on the subject. A thought came to him. Conception suggests a thought that seems complete, individual, recent, or somewhat intricate: The architect's conception delighted them. Notion suggests a fleeting, vague, or imperfect thought: a bare notion of how to proceed.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“FuelFest started as this simple idea, but now we’ve held over 30 events and we’re in 11 markets. … Paul would be very happy with where this has all gone.”

From Los Angeles Times • Jun. 8, 2026

It’s the kind of idea that exorcists playing loose with theology might be attracted to, but not something the church itself seems inclined to back.

From Slate • Jun. 8, 2026

Once upon a time, a dynamic young entrepreneur came to him with a brilliant idea that, on paper, could revolutionize healthcare diagnoses and reduce costs exponentially.

From MarketWatch • Jun. 8, 2026

Senior U.S. officials have discussed having the federal government take stakes in major AI companies after OpenAI CEO Sam Altman floated the idea last year.

From The Wall Street Journal • Jun. 7, 2026

Thus, the idea that this unwelcome stranger would bring mayhem to their delicate balance was detestable.

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman




Vocabulary lists containing idea


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