The phrase "a far sharper" is correct and usable in written English.
It can be used to compare the degree of sharpness between two or more items, often in a figurative sense.
Example: "The new knife is a far sharper tool than the old one, making it easier to cut through tough materials."
Alternatives: "much sharper" or "significantly sharper".
She followed with a far sharper series of anti-trans tweets.
The iPhone's 3.5-incher has a far sharper 960 by 640 pixels.
Tax cuts would be a far sharper incentive to create jobs than the current system of welfare for big companies.
But for large parts of the match Real were camped on the edge of their area and, unsurprisingly, had a far sharper cutting edge.
Even a senior Iranian official confided to a European diplomat recently that he feared a far sharper deterioration if the US opted for a "cut-and-run" strategy.
But since I saw a far sharper performance of this from City Ballet with Yvonne Borree and Nikolaj Hübbe only in January, I see no cause for despair.
But a car for sale in the United States bearing those words — considering what that might portend for our economy and our self-image — could deliver a jolt far sharper than discovering that our newest digital gadget was produced in the world's largest exporting country.
It is difficult to imagine denizens of any precinct of New York's night-life world eating these, though it is perhaps less difficult than actually eating them: they were both punishingly salty, and rich to a degree far sharper than aggressive.
Or a keen analytical mind far sharper than yours or mine?
But a new generation of far sharper imaging is on the way, deploying the emerging science of nanotechnology and other advanced methods to reveal invisible workings at a molecular and cellular level.
The Israel Hayom news website remarked on the occasion of Dagan's retirement: "[He] will be leaving an organisation that is far sharper and more operational than the organisation he received, and all of the accusations from Tehran yesterday are a good indication of that.
