The phrase "almost unknowingly" is correct and usable in written English.
It can be used to describe an action that is done with little awareness or consciousness of it being done.
Example: "She almost unknowingly revealed the surprise party plans during the conversation."
Alternatives: "nearly unconsciously" or "practically without realizing".
Almost unknowingly, she walked to the office where her appointment was.
He, too, felt that, with the acceleration in the past few years, we have entered almost unknowingly into a new era, long heralded and abruptly arrived.
Hauling myself out – toes latching on to the sun-warmed rocks and head still tingling – I find that, almost unknowingly, I am already making my way back up stream for another go.
He also detects the self-perpetuating dynamic of small-town scandal, the whiff of excitement that attends such trauma, the quasi-theatrical positions that protagonists take up almost unknowingly.
The idea of picking a most beloved athlete's personality or playing out of thousands of strangers, all of them grown-ass millionaires running around on a screen indirectly and almost unknowingly competing for the favor of this particular viewer.
He unknowingly took almost 15 times the recreational dose of MDMA, the coroner said.
Unknowingly, he was almost too satisfied — providing the only suspense of the race.
"She could have been given something in her drink, unknowingly, that made her almost incapacitated," Robert said.
In those instances, it was as if I had almost foreshadowed his affair or perhaps unknowingly sanctioned it.
Evans had been assigned to fly the plane but was replaced at the last moment by Hancock; the take-off almost ended in disaster after Hancock unknowingly switched off the engines' water injection needed to ensure sufficient thrust in hot conditions that Evans had switched on before vacating the pilot's seat.
The 800,000 Dreamers in the United States today – almost all of whom were brought here unknowingly as young children – live like every other American.
