"far less reliable" is a correct and usable phrase in written English.
It is often used to compare two things and express that one is significantly less reliable than the other. Example: "The new equipment may be more advanced, but it is far less reliable than the old one."
The technology is far less reliable than people realise.
As a predictor of who will do well in college, it is far less reliable.
First, in the future those international markets will be far less reliable, at least at a price British consumers can stomach.
And Libya, the launching point for many of those heading to Italy, is far less reliable than more democratic nations like Morocco or Senegal.
The fine art of shaping the human material for a dinner party has always stumped me, perhaps because human beings are far less reliable than food.
Because its foot soldiers consist of conscripts who serve a mandatory military service of about two years, it is considered far less reliable to suppress domestic unrest.
Though the play paints McCorvey as by far the less reliable narrator, a shadow of discomfort lingers.
Mr. Naber also looked at Microsoft's virtualization offering, but in tests found it was far slower and less reliable than VMware.
So far insufficient and less reliable sediment yield data have been collected for Northern Ethiopia.
Findings from observational studies are far less rigorous and reliable than those of interventional studies.
"Convergence" for Spain, for example, is far more recent, and therefore less reliable, than it is for the Netherlands, which began its economic reforms a decade ago.But the clinching factor for Germany was the fear that its public, already dubious about the euro, would be more hostile still if less stable Mediterranean countries were included.
