The phrase "almost completely failed" is correct and usable in written English.
It can be used to describe a situation or effort that was largely unsuccessful, but not entirely so.
Example: "The project was ambitious, but it almost completely failed to meet its objectives."
Alternatives: "nearly entirely failed" or "practically failed".
A sign of its success is that it almost completely failed to generate controversy, either nationally or locally.
This would certainly be a quixotic, self-contradictory mission, but it was a mission nonetheless, and on my first day, I almost completely failed.
But it has almost completely failed to take off, with only 161 homes sold as commonhold in the first 13 years after the legislation was introduced.
The letter also said that the Army had almost completely failed to move away from the monopolistic nature of the logistics contract that has paid the contractor, now called KBR, $31.3 billion for logistics operations in Iraq, Kuwait and Afghanistan.
They suffer at the hands of all sides - armed groups, such as the Taliban, government intelligence services and political parties The Pakistani authorities have almost completely failed to stem human rights abuses against media workers or to bring those responsible to account, says the report, 'A bullet has been chosen for you': Attacks on journalists in Pakistan.
Here, mice that lack protein kinase C gamma (PKCγ) displayed normal responses to acute pain stimuli, but they almost completely failed to develop a neuropathic pain syndrome after partial sciatic nerve section, and the neurochemical changes that occurred in the spinal cord after nerve injury were blunted.
The courts almost completely fail in their role as the ultimate safeguard of freedom and order.Russian parliamentarians largely see their job as voting the way they are told (or paid), rather than dealing with their voters' grievances.
Enzyme specific activity values obtained for each protein reveal that the PLCζH233L mutant retains only 24% of the activity of wild-type PLCζ (157 ± 48 vs. 655 ± 36 nmol/min/mg), and the PLCζH398P mutant almost completely fails to hydrolyze [H]PIP2.
Almost all failed so completely that the companies never publicized them — a casualty of the marketers' inability to persuade low-income consumers, including many who can't read, to switch to unfamiliar products with unclear health benefits.
Secondly, EGFR-kinase inhibition completely failed to reverse EMT in EpC40-siAnxA1 and almost completely in EpRasXT cells (Fig S7D and E).
