ERROR
Mistake Blunder
Very far afield
Utterly wide of the mark
He will have to guess again
An absurdly distorted view
I was shown how erroneous was my preconception
We shall make a great mistake if we allow an easy optimism to encourage the belief that——
Sincere but mistaken
Woefully mistaken
A ridiculous contradiction in terms
An erroneous notion
A self-evident falsity
Misleading in appearance
Not conforming exactly to the truth
Not in accordance with the facts
He is laboring under the false notion that——
He put the saddle on the wrong horse
He is out in his reckoning
The report was unfounded
The most culpable blundering
He would kill the goose that lays the golden egg
On the wrong scent
Manifestly incorrect