1. the content of cognition; the main thing you are thinking about

- it was not a good idea

Similar word(s): thought

Definition categories: thought, content

2. your intention; what you intend to do

- the idea of the game is to capture all the pieces

Similar word(s): mind

Definition categories: thought, aim, design, intent, intention, purpose

3. a personal view

- he has an idea that we don't like him

Definition categories: thought, opinion, persuasion, sentiment, view

4. an approximate calculation of quantity or degree or worth

- a rough idea how long it would take

Similar word(s): approximation, estimate, estimation

Definition categories: thought, calculation, computation, figuring, reckoning

5. (music) melodic subject of a musical composition

- the accompanist picked up the idea and elaborated it

Similar word(s): theme

Definition categories: communication, air, line, melody, strain, tune

Sentences with idea as a noun:

- The mere idea of you is enough to excite me.

- I have an idea of how we might escape.

- He had the wild idea that if he leant forward a little, he might be able to touch the mountain-top.