The phrase "a formidable imagination" is correct and usable in written English.
It can be used to describe someone who has a powerful and creative ability to think or visualize ideas.
Example: "The author is known for her captivating stories, which are a testament to her formidable imagination."
Alternatives: "an impressive imagination" or "a powerful imagination."
He has proved himself to be a director of formidable imagination and ambition, but we're waiting to see what he will do with such gifts.
In "Terminus," presented as part of the Under the Radar festival, Mr. O'Rowe has unleashed his formidable imagination on a tale that involves a mother's seduction of her daughter's fiancé, a young woman's seduction by her best friend's husband, and Satan's seduction of a killer with a Faustian pact to provide him with women in exchange for his soul.
Because there quite simply wouldn't be a show called The Walking Dead if not for Mr. Romero's formidable imagination, and because Mr. Romero played with the now accepted tenets of the zombie trope in settings far afield from the zombie story, you owe to yourself and to the zombie genre to watch this film.
At this point, it scarcely matters what he appears in: whatever play or film he lends his graceful frame and formidable imagination to yields levels of complexity, shades of light and dark, that sometimes go far beyond what is in the text.
There's no problem with the movie's pulp-fiction essence; the problem is that almost all of Besson's formidable imagination went into the science-fiction concept and the magnificent computer-graphic realization of it, and very little of that brain power went into the ordinary framework.
According to Grant (2007, 201), during the late Middle Ages "the imagination became a formidable instrument in natural philosophy and theology in ways that would have astonished" ancient Greek natural philosophers, especially Aristotle.
Video games have long proved a formidable force in capturing the hearts, imaginations and wallets of people all over the world.
[more laughter from baby] Stories for public health programming must be driven by research, requiring the creative and research teams to work in close harmony often a formidable challenge given that creative writers typically rely on their own judgment and imagination to create stories.
Boucher had a conventional imagination and not much interest in the real world, but he was a formidable technician.
