The phrase "not entirely fitting" is grammatically correct and can be used in written English.
It is typically used to describe something that is not completely suitable or appropriate for a certain situation. You can use it when you want to express that something is not a perfect match, but still has some relevance or connection. Example: Although the new sofa is comfortable, the color is not entirely fitting with the rest of the room's decor.
It was telling that Biden had to sift through nearly a half century of history to find a precedent for the current malaise among liberals and progressives, but the comparison was not entirely fitting.
So it's perhaps interesting, while not entirely fitting, that the quote often attributed to him: "Video games are bad for you?
But is it not entirely fitting for Muslims to use science fiction as a tool to envision themselves as the protagonists of their own stories, not only existing, but thriving on a timeline far separated from the very real oppression of today?
She does not entirely fit in here.
Austin's notion of legislative sovereignty did not entirely fit the American situation.
"Traditional Islamic education does not entirely fit pupils for their lives as Muslims in modern Britain".
The Unity City Academy in Middlesbrough, in the Tees valley, was designed to look like a Tuscan village; Ofsted concluded it was not entirely fit for purpose.
"The Work Capability Assessment (WCA) inherited by this government was not entirely fit for purpose and that is why we have continuously reviewed and refined it," the spokesperson said.
In the aftermath of the shooting, the picture that began to emerge of Mr. Hawkins included familiar images — a young man facing depression, alienation, abandonment, rejection — but plenty of pieces that did not entirely fit together.
Until now its line has been that "the work capability assessment inherited by this government was not entirely fit for purpose and that is why we have continuously reviewed and refined it".
This shows that the river water is not entirely fit for drinking.
