What it means
Said when someone’s absolutely bang on, they’ve nailed the exact point or explanation with no faffing about. Comes from carpentry, when the hammer lands right on the nail head, clean hit, job done. Handy for praising a sharp spot, calling out the real issue, or ending a long debate when someone finally says what everyone’s thinking.
Usage examples
"I reckon the site’s slow because it’s crammed with pop-ups. You’ve hit the nail on the head, mate. Sort that and it’ll stop chugging like a knackered kettle."
"You hit the nail on the head when you said he was just tired, not angry, that was exactly what was going on."
Where it comes from
The image is pure carpentry: strike the nail dead centre and it goes in clean, miss and you bend it or smash your thumb. The phrase has been around in English since at least the sixteenth century for saying exactly the right thing. Get the point bang on and you have hit the nail on the head, no wonky angles.
Other ways to say it
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