'unchecked spread' is a correct and usable phrase in written English.
You can use it to describe a situation in which something is spreading in an uncontrolled or unchecked manner. For example, "The unchecked spread of the virus has caused havoc in the town."
The collisions are surging with the unchecked spread of the animals, which breed prolifically and can weigh up to 300 pounds.
Alarmed by their unchecked spread, a group of lawyers has taken to organizing citizen raids that seek to free detainees through a show of force.
Aid agencies have warned that security issues are harming the health, education and nutrition of children in Mali, where the unchecked spread of Islamist extremist violence has left many schools and health centres beyond the reach of humanitarian programmes.
The unchecked spread of guns in private hands and secret wiretaps authorized by the White House were among the other rights problems in the United States that China cited.
Mr. Kaplan's title essay focuses on the deterioration of life in West Africa and South Asia, where pressure on land and resources, environmental degradation and the availability of rootless young men to serve in private armies will lead to a "withering away of central governments, the rise of tribal and regional domains, the unchecked spread of disease and the growing pervasiveness of war".
It is worsened by the unchecked spread of early applications at many high schools the majority of seniors submit an application by December and a significant number have at least one acceptance by January.
Terrorism thrives on fear, and fear — if left unchecked — can spread into the deepest, darkest corners of our hearts and lead to decisions and choices that, in normal times, would be unthinkable.
Railing against a system that is now originally intended for me or to deprive me of the right to vote, but like a tumor, when left unchecked, it spread to the rest of the body so now it's impacting everybody.
1. Respond quickly: Negative reviews or comments – particularly when left unchecked – can spread like wildfire on social media.
We tested whether this growth defect, which was not observed in our reporter strain, was caused by unchecked heterochromatin spread caused by the lack of both boundary pathways.
If left unchecked, xenophobia spreads fast.
