The phrase "almost convinced that" is correct and usable in written English.
You can use it when expressing a state of uncertainty or hesitation about being fully convinced of something.
Example: "After hearing the arguments, I am almost convinced that we should change our approach."
Alternatives: "nearly persuaded that" or "close to believing that".
He hadn't played well for the tournament and was almost convinced that he would lose the match.
She seemed almost convinced that the Kremlin's expressed will to keep veterans alive meant I didn't have to schedule a flight from New York to Moscow quite yet.
Laughing, Pettitte said that he was almost convinced that the Yankees had relocated the mound from the old Stadium across the street.
"I'm almost convinced that the White House took a strategic decision a few months ago to let Paul Ryan come out with this detailed plan of his, which they could then attack from the sides," he says.
At least, I'm almost convinced that he was singlehandedly responsible for restocking fees and shorter return windows becoming commonplace in retail electronics stores.
After checking out a rear view of the star's hair, we're almost convinced that her stylist Robert Vetica pulled off the '60s look without hair extensions or a single Bumpit.
Nobody would have dreamed of putting a child actor in a boat with a live tiger, but the sophisticated CGI almost convinced us that was what we were seeing.
"It was made into such a big deal that I almost convinced myself that it was going to be a big pitch for me, when really it was my fourth pitch," Hughes said.
Arno's array of lipsticked nymphs, narrow young men in top hats and tuxedos, and ogling old gents (like the one lifting a brassiere from a street-sweeper's gatherings) were stamped on the page with such brio that he almost convinced America that everybody in New York stayed up every night, drank too much, and had too much fun.
At the end of last season, shoulder tendinitis had almost convinced Rod Henderson that he should be content with memories that included allowing Sammy Sosa's 65th home run and a double to Mark McGwire during the pair's home run duel in 1998.
I started thinking that maybe everything I'd read hadn't done me any good, and I almost convinced myself that what I'd read had got me into prison, that it was too informative about life, that it answered too many questions for a young guy.
