An idea that is very good, useful or interesting.
1. Great idea: First, brainstorm a list of potential solutions to the problem. 2. Next, evaluate each option to determine which one is the most feasible and effective. Great idea should be the one that meets both criteria.
1. "I have a great idea for a reality show lock up a bunch of politicians in a house together and see what happens." 2. "I think it's a great idea to have a Christmas special with a few famous faces thrown in." Ed Sheeran