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Synonyms

big idea

American  

noun

Informal.
  1. any plan or proposal that is grandiose, impractical, and usually unsolicited.

    You're always coming around here with your big ideas.

  2. purpose; intention; aim.

    What's the big idea of shouting at me?


Etymology

Origin of big idea

An Americanism dating back to 1920–25

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.

But then, the agency people unveiled their big idea: to create a campaign centered around reanimated digital avatars of our dead loved ones.

From Slate • Apr. 23, 2026

The big idea was to take Tesla’s learnings from its self-driving technology, which uses software and cameras to autonomously drive automobiles.

From The Wall Street Journal • Jan. 3, 2026

“This is a really big idea that makes a lot of sense,” she said.

From Los Angeles Times • Jul. 7, 2025

The Thatcher government's big idea was that they weren't just going to sell the shares in state owned utilities to big businesses or investors.

From BBC • Mar. 27, 2025

One big idea behind finding your model was that when you did, you’d glimpse your future.

From "Never Let Me Go" by Kazuo Ishiguro

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