Wiktionary
vb. (context idiomatic English) To do something in an extreme fashion; to reach an unexpected extent in doing something.
Usage examples of "go so far as".
He is, I would go so far as to say, the entire set of erogenous zones of every major flying insect of the Western world.
But she did go so far as to reach out across the table and pat his hand.
I will not go so far as to say that our civilians were delighted to have such exciting news to read at breakfast.
But I have since had the satisfaction of finding it worked out with such detail and learning in Ihering's Geist des Roemischen Rechts, Sections 10, 48, that I cannot do better than refer to that work, only adding that for my purposes it is not necessary to go so far as Ihering, and that he does not seem to have been led to the conclusions which it is my object to establish.
But the older Kessentai did not go so far as to not hear the suggestions of the younger.
He did not go so far as to wonder if the priests had lied, or if their mission was a mistake.
There are those who think they can discern in his music the same revolutionary tendency which placed the composer on the right side of a Dresden barricade in 1848, and who go so far as to believe that the liberalism of the young King of Bavaria is not a little due to his passion for the disorganizing operas of this transcendental writer.
In unusually rational moments I would even go so far as to seek a natural explanation, attributing the early deaths of my ancestors to the sinister Charles Le Sorcier and his heirs.
They even go so far as to poison the fountain that the birds generally drink from.
I do not go so far as to say that they were still a living institution.
In fact, I'll go so far as to say that I hope Trainee Moreau will fail.