The phrase "thoroughly train" is correct and usable in written English.
You can use it when referring to the process of providing comprehensive and detailed training to someone.
Example: "We need to thoroughly train our new employees to ensure they understand all aspects of their roles."
Alternatives: "thoroughly educate" or "fully prepare".
Exact(1)
After discharge, the patient's primary care physician may not be available right away and may not have adequate time to thoroughly train the patient.
Similar(59)
Only thoroughly trained riders and horses compete.
Be sure to choose someone thoroughly trained in the technique.
Are these people sufficiently and thoroughly trained beforehand?
Before every new model introduction, Japanese assembly-line workers were thoroughly trained in their new tasks.
Most important, all school staff must be thoroughly trained and prepared to implement the policies.
He was more thoroughly trained for his office than almost any other crown prince before or after.
It is a process in which they are thoroughly trained, and at which they are remarkably quick.
Perhaps no people has ever been so thoroughly trained, on such a large scale and for so long, as the Chinese.
Most speech programs must be thoroughly trained to learn how you pronounce words so they can recognize and correctly translate your vocalizations into text on the screen.
"We get lots of showreels from good-looking people, but they have to be solid journalists who know their sport, and they are thoroughly trained.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com