To lie or say untrue things to make yourself or something else look better.
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To say things that are deceptive, exaggerated, or flattering without any real substance or intention to follow through.
When someone blows smoke, they're creating a false impression — talking big without backing it up.
"Blowing Hot Air"
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Very similar — making empty talk with no substance; blowing smoke often implies more deliberate deception
"Spin"
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To present information in a favourable but misleading way — more strategic than blowing smoke
"Blow Smoke"
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Making empty, exaggerated, or deceptive statements with no real substance or follow-through