The phrase "a most conscientious" is correct and usable in written English.
It can be used to describe someone who is very diligent and careful in their work or duties.
Example: "She is a most conscientious employee, always ensuring that every detail is perfect."
Alternatives: "a very diligent" or "an extremely careful".
She observes its members with an obssesiveness that would be an asset to the most conscientious anthropologist and that, it soon emerges, has implications for her mental health.
Pulling together enough money for a down payment on a home purchase can be a daunting challenge for even the most conscientious of savers.
Most conscientious people would prefer a cheeseburger to a trip to the gym, but they know that – genetic factors aside – heart disease doesn't care who your parents are.
The other George Bush, by the way, was in the convention hall almost as often as the most conscientious delegate, sitting in a V.I.P. section that included a who's who of Republican warhorses: among them, 87-year-old Gerald Ford, former cabinet officials under Presidents Bush and Reagan and Mr. Cheney, who served as defense secretary under Mr. Bush's father.
Even the most conscientious critic has a hard time picking through the many impersonal projects — films like "Doctor Dolittle" with Rex Harrison (1967), or the 1980 remake of "The Jazz Singer" with Neil Diamond — to uncover the core of his achievement.
The result is a page turner that can withstand the most conscientious historians scrutiny.
"It was a joint venture between some of the most conscientious sustainability thinkers of the past 10 years and one of the more significant developers, which had significant resources," he said.
More spots are on the way, with Mr. Johnson talking about employees, the environment and profit-sharing, all categories that have helped give SC Johnson a reputation as one of the world's most conscientious corporate citizens.
First, there are many factors at play – in one proportion or another – in any change of a student's religious views, and even the most conscientious educator cannot take responsibility for all of them.
And there's the rub: as technology swiftly outpaces even the most conscientious of gamers, how can a console hope to beat an upgradable PC or a simpler streaming service like OnLive in the living room?
