The phrase "a most profitable" is correct and usable in written English.
It can be used to describe something that is highly beneficial or lucrative, often in a business or financial context.
Example: "Investing in renewable energy has proven to be a most profitable venture for our company."
Alternatives: "extremely profitable" or "highly lucrative".
In particular, the most complicated, one-of-a-kind — and most profitable — credit-default swaps will most likely stay in the shadows, which is exactly where the big banks want them to be.
While each airline is different, and we note that fuel hedging is generally an endeavor most profitable for the traders, some airlines are feeling the pinch more than others.
For film-makers, showing movies in cinemas was important not so much in its own right but as a means of drawing attention to a product, the most profitable incarnations of which would appear later.
Late-night newscasts are highly valued by local stations because they are among a station's most profitable and most heavily promoted programs.
As a result, the most profitable mining companies often have access to cheap energy, or some other efficiency boost - one firm, based in Iceland, saves money by letting the country's naturally cold climate cool its computers.
McLeod made his big move with the phone book, since directory ads are a Bell's most profitable business.
6.43am GMT Responding to John Kay's indictment of banking, Antony Jenkins argues that a genuinely good business is a profitably one (apparently the most profitable Barclays branches are the ones with the most customer engagement).
For a long time, the most profitable TV models depended on making a lot of episodes of a particular show and then selling those shows in traditional syndication.
The landscape changed dramatically when gas prices hit $4 a gallon, sending its most profitable truck and SUV sales off a cliff.
Do you think that the pharmaceutical companies, the $200 billion dollar a year industry, the most profitable industry in the U.S. by a long shot, will give up their control of U.S. health policy and the influence on the FDA?
