The phrase "a prowess" is not correct in standard English usage.
The word "prowess" is an uncountable noun, so it should not be preceded by the article "a."
Example: "Her prowess in mathematics is well-known among her peers."
Alternatives: "skill" or "expertise".
Democrats who are likely to seek their party's nomination for president in 2004 released midyear fund-raising totals today, and various camps trumpeted their sums in an effort to demonstrate to prospective supporters a prowess in accumulating campaign cash.
("I was, like, 'O.K., I can Judith Butler my way in and out of this.' ") She displays some of the well-documented traits of the millennial generation: a hyperawareness of racial privilege, an overreliance on the word "literally," and a prowess with social media.
The company needed someone who had both data analytic skills and a prowess in Japanese linguistics.
Exhibiting a prowess with collage, the artist branches into multimedia with her Antiheroes series.
A prowess that earned him six great prizes: Evening Standard Award for Most Promising Playwright; Plays and Players Best Play Award Antoinettee Perry Award for Best Play; New York Drama Critics' Circle Award for Best Play; Prix Italia; and Tony Award for Best Play.
His performers, his scenes, his images convey precisely one meaning, which is proof of an extraordinary technical prowess, a veteran's craft — and a stultified vision.
This year's EUYO has a technical prowess that is downright terrifying.
On these points, however, nearly everyone agreed: Mr. Weissenberg possessed a technical prowess rivaled by few other pianists.
While this trio are all in the red, each company boasts a scientific prowess that will bring large rewards.
Now that companies like Tencent have reached a certain prowess in domestic markets, they can look outwards.
The 6.5 mm high hand-fitting is a technical prowess in itself and adds to the feeling of dizziness.
