The phrase "a highly uncharacteristic" is correct and usable in written English.
It can be used to describe something that is very different from what is typical or expected for a person, group, or situation.
Example: "His sudden outburst was a highly uncharacteristic reaction for someone known for their calm demeanor."
Alternatives: "an extremely atypical" or "a remarkably unusual".
In a highly uncharacteristic showing, the Swedish golfer stumbled on the back nine holes with three of her four bogeys, and only one of four birdies.
Barring a highly uncharacteristic shift in Pacific weather patterns, IndyCar racers should anticipate a dry track in Sonoma, Calif., on Aug. 28, when they next convene.
It was a highly uncharacteristic lapse by Shin Beth, Mossad's domestic intelligence counterpart, which allowed Mr Vanunu, with his known Arab sympathies, to roam at will through the Dimona plant.He was able to sketch it, and even produce photographs.
Juan Antonio Samaranch delivered a highly uncharacteristic public scolding in 2000, saying that Athens was now operating on a yellow caution light, but he did not follow what may have been his instincts, to take the Games away.
The sister Audi of Lucas di Grassi, Oliver Jarvis and Loic Duval took third place, their first podium of the season, after they too had suffered a highly uncharacteristic error when a mechanic dropped a wheel in the pitlane, leading to a one-minute stop-go.
In the original film, Ford introduces Wayne with a highly uncharacteristic visual flourish: the camera darts toward Wayne in a rapid dolly shot, as the actor, standing in front of what appears to be a projected background, twirls his rifle in a grand, theatrical gesture.
Meanwhile, Democrats, who normally love to celebrate African-American firsts, experience an uncharacteristic onset of reticence.
If the polling reflects sentiments that hold another seven days, Mr. Ensign would triumph by a margin highly uncharacteristic for this state.
I could see a mellow quality and a botanical luxuriance highly uncharacteristic of Greece.
The Times, in a welcome but highly uncharacteristic embrace of anarchy, celebrated this development as an ingenious guerrilla tactic in youth's eternal war against adult authority — "a bit of techno-jujitsu," as the paper put it.
Chin added that the song's "emergence without a hard copy, so to speak, is highly uncharacteristic of a market, in which the 'commercial twelve' is a given for a long-show pop record".
