The phrase "almost reliable" is correct and usable in written English.
It can be used to describe something that is not fully dependable but has a degree of reliability.
Example: "The data from the experiment was almost reliable, but further testing is needed to confirm the results."
Alternatives: "partially reliable" or "somewhat dependable".
The figure shows that the backbone is able to maintain an almost reliable frame rate.
Rumors about a machine with a new Motorola -made PowerPC chip have gone from whispers to being almost reliable.
We also conducted a restoring resolution test (RRT) (Additional file2), and the result of RRT shows that the velocity structure we have obtained is almost reliable.
Whether one watches video skits created for Funny or Die, The Daily Show With Jon Stewart and The Colbert Report, or reads some of the brilliant satire created for The Onion, The Borowitz Report, The Daily Currant, and Freewood Post: News That's Almost Reliable, the news is being chewed up and spat out with remarkable dexterity.
The short answer is that iPhones were found to be by far the most reliable, almost three times more reliable than the second-place Samsung phones.
(It is remarkable how often the "intermittency" of solar power is cited as a barrier to its growth in India by people who routinely back up their local grid with diesel, in a country where the biggest brown-out risk is on hot summer afternoons when solar is at its most reliable, and where almost any local solar array is more reliable).
The most reliable statistic is for murder, which is almost always reported.
The imposing presence of Tiger Woods at major championships has become almost as reliable as Old Faithful.
Other ancient sources add almost no reliable information to what Porphyry relates.
She fiddled with her diaries until the end of her life, until there was almost nothing reliable there.
