hot air
noun /ˌhɒt ˈeə(r)/
/ˌhɑːt ˈer/
[uncountable] (informal)- claims, promises or statements that sound impressive but have no real meaning or truth
- He talks a lot of hot air.
- Don’t worry about what they’re saying—it’s all hot air.
- The whole debate was just so much hot air.