The phrase "are highly knowledgeable" is correct and usable in written English.
You can use it to describe someone who possesses a great deal of knowledge or expertise in a particular area.
Example: "The consultants we hired are highly knowledgeable about the latest industry trends and best practices."
Alternatives: "are very informed" or "possess extensive knowledge."
Imagine a cocktail party populated by recognizable guests who would otherwise probably never hang out together: some of them are highly knowledgeable about movies, some have made movies, others have appeared in movies and still others have at least seen some movies.
"While NSF's permanent staff are highly knowledgeable and capable," explains a recent white paper on the use of rotators, "the ever changing global science, engineering, and education landscape requires NSF to continually complement its permanent staff with the expertise of individuals from the broader research and education community".
Educators are highly knowledgeable about learning.
And those investigators, according to at least one pro-life group, are highly knowledgeable about abortion rights issues and committed to anti-abortion crimes.
We sought the input of experts because they are highly knowledgeable about the policy context as well as the organisational barriers and facilitators to research use.
He is highly knowledgeable and exuberant.
Everyone I've met in work is highly knowledgeable, hard-working and good at what they do.
Most of the questions were easy, but a few were difficult enough to discern which respondents were highly knowledgeable.
Intriguingly, the winner of the bidding match was William Chak, a renowned Hong Kong dealer who is highly knowledgeable about 18th-century porcelain, which he personally collects.
The ancient Greek naturalists, especially Aristotle, were highly knowledgeable about many aspects of fish biology, and until the end of the 19th century the main advances were in taxonomy, as new species were described and the relationships of those already known were clarified.
"She is highly knowledgeable about this complicated and critical area of health care that impacts millions of Americans," Skip Thurman, a DaVita spokesman said in a written statement, of the company's donations — which have accelerated as Ms. Berkley runs for the Senate.
