The phrase "an unknown consequence" is correct and usable in written English.
You can use it when referring to an outcome or result that is not known or anticipated.
Example: "The new policy may lead to an unknown consequence that could affect employee morale."
Alternatives: "an unforeseen result" or "an unexpected outcome."
While most are benign or of unknown consequence, some are associated with a significant increased risk of disease for the individual and/or their family members.
Other parents in our practice believe strongly that babies are born with a delicate balance of hormones, bacteria, blood cells, etc., that we don't fully understand and can easily disrupt with unknown consequence," she said.
Low-activity haplotypes are shown in shades of blue and green, fast haplotypes in shades of red, and those of unknown consequence in shades of gray.
This is just another case of introducing an alien species into an ecosystem with unknown consequences.
All the while, speculation increased, both at home and abroad, that Belgium would soon split as a state, with unknown consequences for its three regions: Flanders, Wallonia, and Brussels.
On Tuesday, the Environmental Protection Agency designated the canal a Superfund site, a weighty tag with unknown consequences for the artists and sex workers, auto mechanics and homeowners who live and trade along the border zone called Gowanus.
Rightly, Hill points to the multiple attempts Cromwell made in trying to save Charles I's life, born of a terrible fear of the unknown consequences of a republican society.
While Republican members of Congress had already indicated that they intended to continue their own investigations if Clinton occupies the Oval Office, the addition of the FBI adds a new wrinkle with unknown consequences.
And experts say that both sides are concerned enough about the unknown consequences of a Greek departure that it remains a highly unlikely scenario.
But one way or another, they said, both sides are concerned enough about the unknown consequences of a Greek departure that it remains a highly unlikely scenario.
