The phrase "are even more tedious" is correct and usable in written English.
You can use it to compare the level of tediousness of two or more things, indicating that one is more tedious than the other.
Example: "While the first task was boring, the subsequent tasks are even more tedious, making it hard to stay focused."
Alternatives: "are increasingly tedious" or "are more tiresome."
If squinting at the postage-stamp-size pictures you snap with your cellphone camera has got you down, using the phone's cramped keypad to e-mail them to your PC for a better view is even more tedious.
One Touch made sense as a mobile-first product, because entering in information on smartphone's small screens is even more tedious than than it is on the desktop web.
SMBs often cannot afford (or lack the expertise) to complete lengthy loan packages, and, on the flip side, banks are unwilling to afford the (admittedly prohibitive) expense of underwriting the sub-$250K financing space — not to mention those under $100K, for which the process is even more tedious.
This year's campaigns have been even more tedious than usual, and recent pollsshow that interest actually decreased in the days leading up to the election.
Breathing through the nose, which could also cool the brain, was even more effective, completely dampening his subjects' urge to yawn – potentially suggesting a handy trick for anyone facing embarrassment during a tedious conversation.
Instead, there will probably be an even more tedious constitutional crisis of one sort or another.
The proteomics analysis of glycopeptides is made even more tedious by the fact that MS/MS data rarely allow the confident identification of peptide sequences due to the relatively large molecular weights of glycosylated peptides [ 65] and the complex fragmentation that originates from both peptide and glycan cleavages [ 14].
With "regular" commercials already called boring by many consumers, one obvious risk of making commercials longer is making them even more tedious.
Even more tedious is the manual mining for interactions in scientific literature to collect the publication references and detection methods for the novel interaction list.
It also makes the game tedious -- even more tedious than really investing in mutual funds, since no real money is at stake.
