The Canaries always looked destined for a hiding on Saturday, and had it not been for goalkeeper John Ruddy, the margin of victory could have been five or six.
Afterwards Hughton hit out at his defence's poor showing.
He said: "You cannot afford to give them the opportunities we gave them today and that is disappointing."
"We will make no excuses for today or for the points we have got so far this season.
"We are all still annoyed, disappointed and angry with the goals that we conceded because it doesn't matter who you are playing if you give the opposition those sorts of opportunities there's every chance you could lose."