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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

Fifa's big idea is to set up the best chance of blockbuster ties in the latter stages of the World Cup.

From BBC • Dec. 4, 2025

Considering both comedians have made a career of selling out major market arenas in the past, Iglesias said he’s confident his big idea will pay off.

From Los Angeles Times • Apr. 22, 2025

And this last year, I think she got a big idea in her head, to go to China and find them herself.

From "The Joy Luck Club" by Amy Tan