A half-baked idea has not been thought through completely. It has a fault that can be seen with a little thought. This uses the metaphor of an item of baking that is not completely cooked being of no use.
the main idea is the idea that's most impotent.
The opposite of a good idea would be a bad idea. Depending on how bad you could also say terrible idea.
Ternary
main idea
I have no idea. Plain and simple. I have no idea. Plain and simple. I have no idea. Plain and simple.
* Happy * Hardy * Hectic * Humble * Hopeful * Helpless * Hypersensitive * Hackneyed * Halfwitted * Halfbaked * Hypochondriacs * Humdrum * Hotblooded * Humorous * Hardheaded * Hedonistic * Haughty * Hardboiled * Headstrong Gosh it seems like every term you can think of that can describe a Senior Citizen fits almost everyone in the world.
The Idea Icons The Idea Idols The Idea Ideals Ideas in an Instant Ideas and Imagination Ideas with Impact The Idea Implementers Idea Importers Idea Intensity The Idea Investigators The Idea Inquisition Ideas with Insight The Idea Instigators The Idea Instruments The Idea Intelligentsia The Idea Invasion
the main idea is the idea that's most impotent.
An idea that is a noun: idea
the bid idea is the main idea of the story
The opposite of a good idea would be a bad idea. Depending on how bad you could also say terrible idea.
i dont have no idea i dont have no idea i dont have no idea i dont have no idea i dont have no idea
idea
An uninvented idea is an idea that has not been invented yet.
The power of an idea. An idea never dies.
I am sorry but this is a little obvious: it's, "I have no idea." 'no' implies lack of, ie. "I am lacking an idea, I do not have an idea." 'know' implies the understanding of the truth, ie. "I am aware idea." The latter makes no sense.
idea