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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.
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.
This is the British English definition of idea. View American English definition of idea.
a substance that scientists think exists out in space, but for which they have no direct proof