The phrase "absolute understanding" is correct and usable in written English.
It can be used to describe a complete or total comprehension of a subject or concept.
Example: "After years of study and practice, she finally achieved absolute understanding of the complex theories in physics."
Alternatives: "complete comprehension" or "total grasp".
Absolute understanding, on a day to day basis, of how Barbaro was going.
"I don't have an absolute understanding of the player that he could be and the role he'd be playing on our team," Valentine said of Payton.
It is a set of certainties, an absolute understanding of what he can do and, just as crucially, what he can't.
It is achieved by the use of pared-down dialogue and prose that conveys an absolute understanding of its subject: the technical daring of pilots in the age of the space race, and the awareness of their mortality.
I find it really useful to have a theoretical basis for whatever I'm doing - it gives you an absolute understanding of the issues around best practice and why you should and shouldn't do things.
But later, when I asked a retired senior administrator about Frederick's decision to attend the White House meeting, she said, "It may be that, as someone from outside this country, he doesn't know the various cultural markers, doesn't have an absolute understanding of racism the way we do".
"But we're not a normal business and we have an absolute clear understanding that the Sky Blues should play in Coventry.
Understanding absolute truth consists in understanding the nature of ordinary reality as nothing more than conventional.
The accusations of rigging results are due to "an absolute lack of understanding of the principles of the black boxes and the synchronisation of data". he said.
"Peace and love can go out of the window a little bit, they're absolute ideals, but understanding is possible because it includes that what is not possible".
Elizabeth Bowen, probably the author to whom she was closest, said of her that she had "always given one that feeling of an absolute and reticent understanding".
