Definition from macmillandictionary.com
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What a brilliant idea!
Then I had an idea: we could stay with Mark.
an idea for a new TV show
Where do you get the ideas for your stories?
How did you get the idea to remove the window from the outside?
Then she got the idea of sending the poems to a publisher.
I don’t agree with his ideas about education.
Her ideas on the subject were not ones I shared.
She has some pretty strange ideas about how to bring up children.
We didn’t have a clear idea of what to expect from the training course.
Standing in the rain for two hours was not my idea of fun.
Lying by the pool with a good book is my idea of heaven.
I had only a basic idea of how the machine worked.
They had no idea what time they were supposed to arrive.
He didn’t have the slightest idea of how she really felt.
What’s the idea behind these proposals?
The idea is to make more people rich.
My parents wanted me to be a doctor, but I had other ideas.
He had arrived at the school with the idea of starting a band.
The policy is based on the idea that some industries need to be protected from market forces.
I’m a great believer in the idea of democracy.