hot air

Idioms & Phrases

hot air

Empty, exaggerated talk, as in That last speech of his was pure hot air. It is also put as full of hot air, as in Pay no attention to Howardhe's full of hot air. This metaphoric term transfers heated air to vaporous talk. [Late 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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