"accidental circumstances" is correct and usable in written English.
You can use it to describe an event or situation that was not intended or expected to happen. For example, "The fire was caused by accidental circumstances, not arson."
The Tryptizol he was prescribed is so potent that, were even one to be taken over the prescribed limit, death could easily follow in purely accidental circumstances.
But he came across the Treadwell footage in almost absurdly accidental circumstances, while hunting for his car keys in the offices of a television producer named Erik Nelson.
Another, unfortunately obscure canon identifies four sources of doubt, or potential causes of erroneous judgment (B10): accidental circumstances, inconclusive evidence, causal overdetermination, and transience.
In this process there is nothing necessary; various accidental circumstances decide which ideas become a basis for investigation and are disseminated within a collective; which meetings between scientists happen; which research projects acquire social support; which experiments are conducted first etc.
Without accidental circumstances such as acute bronchitis, a sick family member or acute heart diseases, they would probably have continued.
It is therefore helpful to review the origins of research in chemical engineering: do the best topics originate from planning for the greatest good of the greatest number, or do they happen adventitiously from accidental combinations of circumstances leading to bright ideas?
Some of the greatest discoveries in human history have been the result of accidental or unexpected circumstances.
Among the young people killed by firearms, 2,225 were homicide victims, 763 committed suicide and 196 died in accidental or undetermined circumstances.
Leithead and Lind (4) conclude that heat disorders occur for one or more of three reasons: the existence of factors such as dehydration or lack of acclimatisation; the lack of proper appreciation of the dangers of heat, either on the part of the supervising authority or of the individuals at risk; and accidental or unforeseen circumstances leading to exposure to very high heat stress.
Later the belief arose that anyone could become a goryō by so willing at the moment of death or by meeting with accidental death under unusual circumstances.
It's a literary experiment, however accidental or forced by circumstance, that shatters through stale academic debates about authorial intent and semantic autonomy.
