Thesaurus.com
Dictionary.com
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.

Some analysts think that isn’t a great idea.

From MarketWatch • Jun. 9, 2026

He described knocking the property's door aggressively, with the owner answering, and having no idea of what was happening on her roof.

From BBC • Jun. 9, 2026

The idea is that when sterile flies are released into targeted areas, they wold mate with wild screwworm flies and prevent them from reproducing.

From Barron's • Jun. 8, 2026

But our new findings, published in the American Journal of Biological Anthropology, challenge this long-held idea about human evolution.

From Science Daily • Jun. 8, 2026

“What’s all this?” she asked, but she had an idea, and the panic started to bubble.

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith




Vocabulary lists containing idea


Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "idea" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com