The phrase "absolute assurance from" is correct and usable in written English.
It can be used when expressing a strong guarantee or confidence that something will happen or be true, typically in formal or professional contexts.
Example: "We require absolute assurance from the contractor that the project will be completed on time."
Alternatives: "complete guarantee from" or "full confidence from".
Sir Philip Craven, the Bolton-born International Paralympic Committee presaidnt, said events in the nearby Crimea would not have an impact on the Games: "We have the absolute assurances from the Russian government and from the organising committee with regard to security, security which was excellent during the Olympics".
On some level, that was true — the United States is a divided country, and it is tired of fighting wars in the Middle East, in South Asia — but he would be wrong to assume that these facts would, with absolute assurance, prevent the Trump Administration from launching a strike on North Korea.
There is no absolute assurance that Ashley Cole will have both recovered from his broken ankle and attained full match fitness before England begin their World Cup campaign against the United States in Rustenburg on 12 June.
"We need to keep the White House and everyone else away from you, and you have my absolute assurance that will happen".
Bob Crow, RMT general secretary, said: "Now that the government have set out a clear timetable for renationalising the East Coast Main Line from the 12th of December RMT is demanding an absolute assurance that this will be a permanent move that recognises the chaotic failures of privatisation on this prestige route on the UK rail network.
He says this with absolute assurance.
He sounds as lost as ever, yet this is a mark of absolute assurance.
Every time the ball was struck near an Australian fielder it was caught with absolute assurance.
"It doesn't say absolute assurance or perfect protection of public health and safety".
