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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.

It’s also a good idea to sign Form 843 with a blue pen instead of black, Marine said.

From MarketWatch • May 27, 2026

“All of our definitions about masculine and feminine are evolving … It doesn’t necessarily have to be only for a man. I really like that idea, particularly as the definitions of masculinity are in transition.”

From Salon • May 27, 2026

One idea is that powerful winds drag the clouds deep into the planet's atmosphere on the scorching day side, effectively hiding them from view.

From Science Daily • May 27, 2026

“Our parents were sold the idea that at 50, it’s over,” Jones says.

From Los Angeles Times • May 27, 2026

And then, to soften things: “I wouldn’t have gone back to the Dannenbergs’ if you hadn’t suggested the idea of paying for the headstone,” I tell him.

From "The Brightwood Code" by Monica Hesse




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