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Hot air
01
a statement that is untrue, exaggerated, or meaningless
What is the origin of the idiom "hot air" and when to use it?
The idiom "hot air" has its origin in the concept of heated or inflated air that lacks substance or significance. The phrase metaphorically refers to empty or exaggerated talk that lacks truth, substance, or value. It is used to imply that the speaker is engaging in idle chatter, making grandiose claims, or offering empty promises without any real substance or intention to follow through.
Examples
The politician 's speech was filled with hot air, making promises that were never fulfilled.
Do n't pay attention to his boasting; it 's just hot air without any real achievements to back it up.
02
air made hot, causing it to lift
Examples
The balloon floated because it was filled with hot air.
Hot air rises, which is why chimneys work efficiently.
