knock out (2) Informal
Meaning: If you knock somebody out, you impress them very much with something you do, or something you make.Synonym: impress, amaze
- knock sb out I just heard Kanye's new album and it really knocked me out. It's got some great songs on it.
- knock sb out Don't worry! You'll knock everyone out with your presentation. It's brilliant!
When Tess showed her new film at Cannes, it knocked everyone out. They