The phrase "a perilous undertaking" is correct and usable in written English.
It can be used to describe a task or project that is risky or dangerous in nature.
Example: "Climbing Mount Everest is considered a perilous undertaking due to the extreme weather conditions and altitude sickness."
Alternatives: "a risky endeavor" or "a dangerous venture."
Meanwhile, Debenhams, Britain's largest department store chain, has been trying desperately to raise funds—a perilous undertaking in the current financial drought.The luxury-goods sector which seemed immune from the general economic downtown, until the sudden demise of Lehman Brothers in September caused even the rich to panic is now in free fall.
The role of Nettie has traditionally been cast with an opera star (sometimes a perilous undertaking), but Ms. Blythe is in every way an ideal fit.
One death in five years is one too many but with 6 billion passenger journeys in that time, plus a similar number on the London Underground, it is a fallacy to suggest that rail travel is a perilous undertaking.
If the nine attempted to leave independently, one likely method would involve hiring a smuggler to navigate northern Syria, a perilous undertaking compounded by the counter-offensives of Kurdish forces pushing south.
It's a perilous undertaking, however, because CIA security officers also track Ted's movements to determine if he acts suspiciously.
Predicting who exactly is a future threat before a person has done anything wrong is a perilous undertaking.
As custom dictates, she was buried in the ihram or simple white tunic that she, like any other pilgrim, had worn in Mecca.The haj, which will bring over 2m people to Mecca towards the end of this month, has always been a somewhat perilous undertaking, and pilgrims like devout travellers of every faith and era see facing the dangers of the road as part of their spiritual duty.
The riveting documentary The Man Who Skied Down Everest (1975) trails champion Japanese skier Yuichiro Miura and his team as they ascend the world's highest peak -- an arduous, perilous undertaking in itself, ultimately hoping to descend on skis -- a virtual suicide mission.
A number of the book's other authors have been censored or jailed, a reminder that whatever its rewards, writing fiction is a far more perilous undertaking in the Arab world than in the West.
Union Jacks and bunting were in abundance at all the major arteries, and construction on the Pall Mall, in anticipation of the XXX Olympiad, snarled traffic and made crossing the street an even more perilous undertaking.
In 1938 my father was an illegal alien escaping Europe, and my mother was undertaking a perilous journey across Europe to reach a ship that would bring her to the United States and freedom.
