The phrase "a tedious effort" is correct and usable in written English.
It can be used to describe a task or activity that requires a lot of work and is boring or tiresome.
Example: "Completing the lengthy report was a tedious effort that took several days to finish."
Alternatives: "a tiresome task" or "a monotonous endeavor."
Deputy Mayor Robert C. Lieber tried to put the best face on what is becoming a tedious effort, while seeming to scold both sides.
The management of the MRO operations is currently a manual and time-consuming effort and makes the creation of Product Service Systems (PSS) a tedious effort.
The design and deployment of the majority of Management and Control Systems (MCS) for ITS involves a tedious, effort- and time-consuming manual tuning and calibration procedure not only during the initial design and deployment of the ITS but, in most cases, during its whole lifetime.
A tedious effort to map more than 20,000 square miles of Indian Ocean sea floor off Australia's west coast is 40% complete and is slated to wrap up in May.
The project started in July to little fanfare, but news of it spread rapidly on the web, and more than 100,000 volunteers classified over 1m galaxies in a few months a task which would have taken a lone astronomer years of unbearably tedious effort.
However, one challenge of using the DEA is the tedious effort required to fine-tune parameter values due to a lack of theoretical understanding of what governs its searching behavior.
All this tedious effort is why vanilla is so expensive.
"The other thing that Tom, Bill and I learned is to pay attention to detail and to give tedious effort to those details.
Flaunting gross-out violence and cartoonish trappings, "Dust Up" is the sort of self-impressed tedious effort that many thought had died with the post-Tarantino imitations of the 1990s.
There are some tragedies here, the first of which is that the whole tedious effort could have been avoided if English Heritage had not fluffed the decision of whether or not to list it.
