The phrase "allowed to run unchecked" is correct and usable in written English.
It can be used to describe a situation where something is permitted to operate without supervision or control.
Example: "The project was allowed to run unchecked, leading to numerous unforeseen issues and delays."
Alternatives: "permitted to operate freely" or "allowed to proceed without oversight."
Recently, several new drugs have been developed to treat hepatitis C, a serious viral infection that can cause severe liver damage if allowed to run unchecked.
Trump is what you get when demagoguery is allowed to run unchecked, egged on by a craven media that simply enjoys the show.
But some analysts today viewed the attacks, which killed at least 29 people, including 7 Americans and 9 of the attackers, as a harsh example of what happens when extremism in any form is allowed to run unchecked.
Jack Wilshere blew a gilt-edged one-on-one with the over-worked David De Gea in the 15th minute while he might have done better moments earlier when he was allowed to run unchecked to the edge of the United box.
There is an almost universal sense in the Arab world that Washington is paying the price for entering Iraq with no coherent plan beyond toppling Saddam Hussein, and that the anarchy they allowed to run unchecked in the first days of occupation a year ago has never really been tamed.
But most of those in Davos do not want to hear from trade unionists warning that capitalism will eat itself if workers are unable to buy the products they produce, if inequality is allowed to run unchecked, if global unemployment remains stuck at 200 million and ordinary taxpayers are forced to pay for the sins of the banks through blanket austerity programmes.
Injustice and vice inevitably follow and are allowed to run their course unchecked until evil karma accumulates to the limit.
I should have been allowed to run".
Climate change, Robinson warned, would prove a "serious disruption to social order" if allowed to go unchecked.
Hedge-fund managers argue that LTCM was a unique case of rampant hubris allowed to go unchecked.
But to hear some G.I.'s tell it, the highest risk of violence is on the streets of South Korean cities, where political leaders have allowed anti-Americanism to run unchecked.
