The phrase "a singular ability" is correct and usable in written English.
It can be used to describe a unique or exceptional skill that someone possesses.
Example: "Her ability to solve complex mathematical problems quickly is a singular ability that sets her apart from her peers."
Alternatives: "a unique talent" or "an exceptional skill".
As most any mother and father knows, kids have a singular ability to detect double standards.
In 2003, American officials showed a singular ability to alienate people.
That gives Mr. Miller a singular ability to shape his attack on the mayor with detailed inside information.
Ms. Smith, who held her wedding picture while testifying, has frustrated Mr. Hardin by showing a singular ability to answer "yes" or "no" questions with run-on sentences.
He found a macabre fascination in the pattern of bloodstains, and acquired a singular ability to charm expert prosecution witnesses out of their preconceptions.
Yet by the time Tribe imploded a decade later, Tip was a rap icon, his voice one of the genre's most distinctive instruments, his records emphasising a singular ability to meld muscular beats with the complexities and subtleties of jazz.
McCullers had an almost singular ability to humanize any kind of person, many of whom had never appeared in American literature before she created them.
But there was room among my observation team, at home, for optimism and a utopian view -- a quality of outlook that has been design's singular ability, its genius, in improving the world.
While toddlers tuning into this new Nickelodeon series will no doubt adore Mark for his shaggy, mad-scientist appearance and his singular ability to render potato bugs with a marker, their parents will likely appreciate him for other reasons.
The ingenuity of William Greaves's film is his singular ability to turn the story of its production into a central and natural element of the film.
It subverts the singular ability of language to help us sympathize with people who are different from us.
