Select the most appropriate meaning of the given idiom.
Castle in the air
Answer & explanation
Correct answer: option 2
The most appropriate meaning of the idiom "castle in the air" is an unrealistic plan.
The other options are incorrect.
- "Acquire something honestly" does not mean an unrealistic plan. Acquiring something honestly means to get it in a fair and legal way, while an unrealistic plan is a plan that is not likely to happen.
- "Very expensive" does not mean an unrealistic plan. Expensive means costing a lot of money, while an unrealistic plan is a plan that is not likely to happen.
- "Polluted air" does not mean an unrealistic plan. Polluted air is air that is contaminated with harmful substances, while an unrealistic plan is a plan that is not likely to happen.
The idiom "castle in the air" comes from the idea of a castle that is built in the sky. In the same way, a castle in the air is a plan that is not likely to happen because it is not based in reality. For example, you might say that a person who is dreaming of becoming a movie star has a castle in the air.