idea
noun
uk/aɪˈdɪə/ us [ C ]
a suggestion or plan for doing something:
idea about sth The CTO should have ideas about where the company needs to be heading in terms of technology.
come up with/have an idea He came up with the idea of promoting the two products together.
new/fresh/innovative ideas
They had great ideas but lacked the business know-how to turn an idea into a successful product.
[ S ]
the purpose of, or reason for, doing something:
The whole idea of budgeting is to control costs.