The phrase "a formidable one" is correct and usable in written English.
It can be used to describe something or someone that is impressive, powerful, or intimidating in nature.
Example: "The opponent was a formidable one, known for their strategic prowess and relentless determination."
Alternatives: "a powerful presence" or "an impressive figure".
April Ross and Jennifer Kessy turned into the best women's tandem on the Assn. of Volleyball Professionals Tour and a formidable one on the Fédération Internationale de Volleyball World Tour.
Re "As Bush Replaces Prosecutors, a Formidable One Stays On" (news article, June 18): You report that Mary Jo White, the United States attorney for the Southern District of New York, "is a self-declared political independent who has even told people she does not vote".
That encroachment would be particularly pronounced in the dry dog food category, where Ralston and Nestlé pose little danger on their own but a formidable one when combined.
The basic virtue of "Hidden Figures" (which opens on December 25th), and it's a formidable one, is to proclaim with a clarion vibrancy that, were it not for the devoted, unique, and indispensable efforts of three black women scientists, the United States might not have successfully sent people into space or to the moon and back.
The move seems designed to offset any perception of Nadella's inexperience on the hardware side, and indeed, the team should be a formidable one if Gates is really going to be spending more time off the bench.
His solution is a formidable one.
And Wipro helped set the tone for the industry, too, giving the country a formidable one-two punch in one of the planet's fastest-growing sectors.
His mastery of dozens of instruments made him a formidable one-man dynamo and a venerated steal-the-show performer on award shows, tribute performances, music festivals and after parties alike.
Anthony and J. R. Smith, who added 30 points, were a formidable one-two punch.
SOUTH PLAYER TO WATCH MARCELUS KEMP, at 6 feet 5 inches and 210 pounds, combines with Nick Fazekas to form a formidable one-two punch for Nevada.
The leftie is Randy Johnson, who appeared in an episode of the Disney series "The Jersey" in 2002, when he was part of a formidable one-two punch with Curt Schilling in the Arizona Diamondbacks' rotation.
