The phrase "a more formidable task" is correct and usable in written English.
It can be used when comparing the difficulty or challenge of a task to another, indicating that the task in question is more challenging than a previously mentioned one.
Example: "Completing the project on time was challenging, but organizing the team was a more formidable task."
Alternatives: "a greater challenge" or "a tougher job".
But preserving it will be a more formidable task, given the development plans for the Riviera Maya, the 70-mile stretch of idyllic coastline between Cancún and Tulúm.
The only way he could wrest power from the unions was by persuading them to use their block votes to that end, a more formidable task than he at first realised.
Model selection often represents a more formidable task.
But, surprisingly, promoting long-term stem cell graft acceptance is a much more formidable task than is supporting host acceptance of a vascularized solid organ such as a heart.
Overhauling all of Sony, however, was a far more formidable task.
"It now seems a much more formidable task, requiring global cooperation with swift recognition and response". One reason for special concern is the link between temperature and the atmospheric content of the so-called greenhouse gases.
The lesser teams in the A.C.C. will have an even more formidable task in trying to reach a B.C.S. bowl game now, including Beamer's Virginia Tech squad, which is not expected to be a top challenger this year.
Tapped to step in for and then replace Brian Williams last year after the dethroned NBC news anchor was caught choosing self-promotion over the truth, Holt, as moderator of the first debate between Hillary Clinton and Donald Trump, now has an even more formidable task: Return television coverage of the 2016 presidential campaign to something approaching sanity.
Tellingly, it is "the states and localities" that are charged with the more formidable task of figuring out how to achieve these standards.
American intelligence agents face the much more formidable task of penetrating the opaque societies of Afghanistan and northern Pakistan, where access frequently comes with blood ties.
To win approval for a three-year program that would likely cost as much as $5 million to send extra Federal prosecutors and agents into Philadelphia, the N.R.A. has agreed to lobby Congress for support, and Mr. Rendell has agreed to what may be the more formidable task, winning the backing of the Clinton Administration.
