The phrase "at cumbersome" is not correct and usable in written English.
It seems to be a misphrasing, as "cumbersome" is typically used as an adjective and should not be preceded by "at."
Example: "The process was cumbersome, making it difficult to complete the task efficiently."
Alternatives: "inconvenient" or "awkward".
European negotiators are also frequently at odds with their counterparts in the United States, who have criticized the legally binding structure created at Kyoto as cumbersome, unworkable and a threat to American sovereignty.
European negotiators are also frequently at odds with their counterparts in the United States, who have bitterly criticized the legally binding structure created at Kyoto as cumbersome, unworkable and a threat to American sovereignty.
The 2010 CR survey notes that Wal-Mart shoppers were "particularly peeved" at the cumbersome merchandise return process at the giant retailer.
Her? Well she was just taking a good look at this cumbersome outlander who'd wandered into her watery realm.
Downing street – aware of the anguish of the families of these unconfirmed Britons – has privately expressed frustration at the cumbersome process of identification of the bodies following the killings last Friday.
It has been a few years since I read an actual book on a plane, and I was astonished at how cumbersome, how intractably wrong, it felt in my hands.
Israel has a well-established technology sector, but in the Arab Middle East outside the United Arab Emirates and its leading economic center, Dubai the legal and regulatory system is at best cumbersome to navigate, and more often unpredictable and inconsistent.
It's a common understanding that the interview process is tiresome, nerve-wracking and, at times, cumbersome for interviewees.
Antibiotic selection in the mammalian or vector host is at best cumbersome, with a requirement for daily or more administration of drug, which may impact the outcome of infection.
