| Light bulb, symbolically | 24 |
| Light bulb, in a strip | 22 |
| Light bulb, figuratively | 24 |
| Its icon is a light bulb | 24 |
| It's just a thought | 23 |
| It might be right or bright | 27 |
| It may pop into your head | 25 |
| It may be preconceived | 22 |
| It may be fixed or bright | 25 |
| It may be bright or big | 23 |
| It comes before a patent | 24 |
| It can be big or harebrained | 28 |
| Inventor's springboard | 26 |
| Invention's origin | 22 |
| Innovator's inspiration | 27 |
| Flash of brilliance, perhaps | 28 |
| Embryo of an invention | 22 |
| Creator's sine qua non | 26 |
| Cartoonist's light bulb | 27 |
| Brain-picker's pursuit | 26 |
| "You have no ___" | 27 |
| "The very _____!" | 27 |
| "I have an __!" | 25 |
| "Eureka!" cause | 25 |
| You may bounce it off someone | 29 |
| Writer's block buster | 25 |
| What's the big ___? | 23 |
| What a light bulb symbolizes | 28 |
| What a light bulb may signify | 29 |
| What a germ can become | 22 |
| The thinker's reward | 24 |
| The origin of an invention | 26 |
| Sudden mental inspiration | 25 |
| Starting point, perhaps | 23 |
| Something that comes to mind | 28 |
| Something on your mind | 22 |
| Result of some brainstorming | 28 |
| Result of cerebral activity | 27 |
| Puzzlemaker's beginning | 27 |
| Product of the imagination | 26 |
| Product of imagination | 22 |
| Problem solver, perhaps | 23 |
| Orson: "Bright ___" | 29 |
| Orson "Bright ___" | 28 |
| One may be big or bright | 24 |
| Madison Avenue product | 22 |
| Lightbulb in a comic strip | 26 |
| Light bulb, in the funnies | 26 |
| Light bulb, in comic strips | 27 |
| Light bulb, in a comic strip | 28 |
| It's out of your mind | 25 |
| It starts in your head | 22 |
| It might pop into your head | 27 |
| It might just come to you | 25 |
| It might be harebrained | 23 |
| It might be half-baked | 22 |
| It may come from nowhere | 24 |
| It may be just a hunch | 22 |
| It could just come to mind | 26 |
| It begins at conception | 23 |
| Inventor's specialty | 24 |
| Inventor's inkling | 22 |
| Inventor's incentive | 24 |
| Inventor's first step | 25 |
| Inventor's brainchild | 25 |
| Invention's beginning | 25 |
| Inspiration for an author | 25 |
| Innovator's breakthrough | 28 |
| Gray cells' product | 23 |
| Good piece of one's mind? | 29 |
| Flash in the brainpan? | 22 |
| Cure for writer's block | 27 |
| Comic's light bulb | 22 |
| Cogitator's reward | 22 |
| Cartoon light bulb indication | 29 |
| Cartoon "bulb" | 24 |
| Bright thing from gray matter | 29 |
| Bright one from gray matter | 27 |
| Brainstormer's pursuit | 26 |
| Birth of a plan, perhaps | 24 |
| Author's inspiration | 24 |
| A result of cerebration | 23 |
| A lightbulb can represent it | 28 |
| A good one may come to mind | 27 |
| "You have no ___!" | 28 |
| "The very" thing? | 27 |
| "The very ---!" | 25 |
| "Light bulb" | 22 |
| "I have no _____!" | 28 |
| "I had no __!" | 24 |
| "Here's an ___" | 29 |
| "Eureka!" elicitor | 28 |
| "Aha!" elicitor | 25 |
| "Aha moment" cause | 28 |
| "Ah-ha" predecessor | 29 |
| ___ man (game-show creator) | 27 |
| Standard of perfection | 22 |
| Something to shoot for | 22 |
| Standard of excellence | 22 |
| Just the way it should be | 25 |