The phrase "an unavoidable condition" is correct and usable in written English.
You can use it to describe a situation or circumstance that cannot be avoided or escaped.
Example: "The heavy rain created an unavoidable condition that forced the event to be canceled."
Alternatives: "an inescapable circumstance" or "a necessary condition".
This global transition to renewables is an unavoidable condition for containing global warming below 2C.
It is an exciting show for anyone interested in art or architecture; it proves that old history can be taught new tricks and pluralism is not an unavoidable condition, that there can still be such a thing as a coherent style that accommodates individual sensibilities.
In our subsequent result we demonstrate that the assumption that ((frac{lambda_{i}}{lambda_{1}+cdots+lambda_{i}} )_{i=1} ^{n}) is nonincreasing is not only a technical condition but, in some sense, it is an unavoidable condition.
Among the questions debated were whether the inclination to engage in homosexual conduct was congenital or acquired, whether it was curable or incurable, and whether it should be accepted as an unavoidable condition or actively resisted and suppressed.
Stress is currently an unavoidable condition in our daily experiences, activating physiological systems and disregulating the body homeostasis [ 7, 8].
Here I refer to the essential elements of political leadership and effective diplomacy in constructing an alternative reality for the future, rather than implicitly assuming that conflict and war represent the inevitable and unavoidable condition of humankind.
Nonetheless, the intent is to generate, although imprecise, a sense of the magnitude of avoidable conditions relative to unavoidable conditions that, informally, 'could have happened to nearly anybody and was an unavoidable accident'.
Vandalism, weather and other unavoidable conditions may not receive the care the work needs to recover.
This process is not to be equated with so-called accepted, unavoidable conditions that may accompany aging.
In fact, our fast is contextualized by the knowledge of the very real and very unavoidable conditions of our fellow humans' lives -- and our abrupt stint of deprivation will only force us to be even more cognizant of these brutal facts.
Health inequalities due to inevitable and unavoidable conditions (e.g. biological/genetic variations) do not constitute inequities.
