"fully versed" is a correct and usable phrase in written English.
It means to have a thorough understanding or knowledge of something. Example: She was fully versed in the company's policies and procedures, having worked there for over 10 years.
He appears fully versed with the Raspberry Pi already.
Warburton is fully versed in the ideology attached to the Old Firm.
A fully versed city tour this is not – but who needs the big sights?
"You need someone who is fully versed in bringing on subs, who can read plans, who understands the licensing process".
When preparing material for broadcast in election periods you should make sure you are fully versed in the relevant rules.
Anyone who has read Carole Dweck's Mindset will be fully versed in the destructive power of such culturally vindicated language.
While not German or a Berlin citizen I spend a lot of time in the city and am fully-versed in the club's music policy.
This allows listeners to become fully immersed and versed on the benefits of any given product or service provided by a company or industry.
If you've ever been a teenage girl – or, in fact, a fully adult woman – you'll be well versed in faking orgasms.
By the end of our training program, residents will be well versed in the theoretical aspects of neurosurgery, be fully trained in the bedside care of neurosurgical patients, be proficient technical neurosurgeons, and be able to design, execute, and critically evaluate neurosurgical clinical, translational, and basic research.
Be fully aware of the book-keeping requirements and be well versed in business rules and ways to keep organised and on top of finances.
