The phrase "a certainty that a" is correct and usable in written English.
It can be used when expressing a strong belief or assurance about something that is expected to happen or be true.
Example: "There is a certainty that a decision will be made by the end of the week."
Alternatives: "an assurance that" or "a guarantee that".
Desperation for a solution is matched by a certainty that a cure exists, either through treatment or training.
It begins with a certainty that a situation is intolerable and a frustration that most people don't see it that way.
"If I knew for a certainty that a man was coming to my house with the conscious design of doing me good," he wrote in "Walden," "I should run for my life".
The thought of Hamlet in a beanie may make your blood run cold, but the first sight of this spindly waif in Trevor Nunn's modern-dress production leaves an indelible impression, and a certainty that a youthful Hamlet can take the part into a different register.
"If I knew for a certainty that a man was coming to my house with the conscious design of doing me good, I should run for my life," wrote Thoreau, and this is roughly how I feel about the man giving me a book that will make me a better person.
It calls to mind Thoreau's fine remark: "If I knew for a certainty that a man was coming to my house with the conscious design of doing me good, I should run for my life".Justin WilsonWashington, DCSIR – If we had told people in 1956 that eventually nearly every jurisdiction in the world would mandate that they must be strapped into their cars, they would probably not have believed us.
The actual nature of the plot lacks a certainty that would allow an overall stance on women's issues to be determined, and it is not even certain as to where Fielding stood on the issue.
At the heart of this impulse lies a yearning for a certainty that will overcome the fear and anxiety we feel in the face complex problems and genuine threats.
At this point, of course, there is no way of knowing if Sessions will be charged, much less convicted, of any crime, but it is a certainty that an investigation of his activities will be a difficult and painful experience for him, for the Trump Administration, and, perhaps, for the country.
But they may yet be forced to a choice between breaking their promise and going to jail; and it is a near-certainty that, as a matter of personal and professional honor, they would choose the latter.
