The phrase "a vulnerable one" is correct and usable in written English.
It can be used to describe a person, group, or situation that is susceptible to harm or emotional distress.
Example: "In times of crisis, the elderly often become a vulnerable one, requiring additional support and care."
Alternatives: "a fragile individual" or "a sensitive case."
Results suggest a possible gradient effect of frailty on adverse outcomes where changes in as little as 1 or 2 frailty criteria can impact on destabilizing a carefully balanced homeostatic physiological state into a vulnerable one.
It is also a vulnerable one.
The dying population is a vulnerable one.
Their position is a vulnerable one, to say the least.
Then the Netherlands scored an additional 3 imps for one fewer undertrick in a vulnerable one no-trump.
Yet the very factors that make Mr. Lieberman an enticing choice also make him a vulnerable one.
The terrible loss in Arizona had played out just like this, a lot of yards early and a vulnerable one-touchdown lead that evaporated with an interception returned for a touchdown.
"We still have a big disengagement in politics - we still think it is something men do for men and that women's engagement is a more recent one and a more vulnerable one... Women are the best kept secret in politics and we are out to change that".
The formula is different from the one they used to win four of the last six World Series, and the question as they play out the last two weeks of the season is this: Have they built a better team for postseason competition, or a more vulnerable one?
Despite standing aside from the invasion and being excluded from the subsequent administration, the U.N. found itself a prime target of Iraqi guerrillas, and a particularly vulnerable one because relief and reconstruction work cannot be carried out from behind impregnable barriers.
Dr. Sullivan called this group of young women a particularly vulnerable one, noting that in 1985, lung cancer had moved ahead of breast cancer as the main cause of death among women as a consequence of increased smoking over the last 20 to 25 years.
