The phrase "a most worthwhile" is correct and usable in written English.
It can be used to emphasize the value or importance of something, often in a formal or literary context.
Example: "The conference was a most worthwhile experience, providing valuable insights into the industry."
Alternatives: "highly valuable" or "extremely beneficial".
The Krindchicks agree it was "All in all, a most worthwhile experience".
Still, flagging the importance of serious financial discussions with your family is a most worthwhile idea, and, when combined with Mr. Vento's advice, will help keep you from becoming complacent about your money.
Speaking in Rio, the sports minister, Tracey Crouch, insisted the investment was still a most worthwhile one: "The great thing about sport is that it completely overrides politics most of the time.
Thus, the investigation of a customized manipulator, having a bi-directional stroke in order to approach the upper sections, is a most worthwhile subject in the automation of the shipbuilding process since such a system should be capable of carrying out continuous blast cleaning from the upper to the lower sections at one time, without the need for any additional operations.
Believers and skeptics alike will be in on the debate and in my view it is a most worthwhile and moreover thoroughly entertaining one.
I've learned that as a founder the hours you invest in building a team are the most worthwhile.
It's both a comfort and a shame that some of the most worthwhile programming today is exactly what it was 30 years ago.
For some med students, they just know that they want to help people, and becoming a surgeon seemed like the most worthwhile way for them to do that.
Dasgupta constantly seeks to upend conventional wisdom about Delhi, the murky circulation of its money, and the roots of its periodic outbursts of violence, making this one of the most worthwhile in a strong field of recent books about India's free-market revolution and its unintended consequences.
White considered teaching "not only stimulating but... the most worthwhile thing a person can do".
But most worthwhile is a 2012 essay on the subject by music critic Josh Kun in American Prospect.
