The phrase "a slackening of" is correct and usable in written English.
It can be used to describe a reduction or easing of something, such as tension, pressure, or intensity.
Example: "There has been a noticeable slackening of the regulations in recent years, allowing for more flexibility in the industry."
Alternatives: "a decrease in" or "a reduction of".
Nor did it occasion a slackening of his influence.
Another byproduct might just be a slackening of the neurosis that haunted Ivo Andrić.
Closer to the surface they are slowed by friction, and higher than 300 metres they are weakened by a slackening of the horizontal pressure gradient force.
was marked by a slackening of his already indifferent work habits, but mainly by a theatrical act that had suddenly switched masks -- smiles to frowns.
Its boss, Jeffrey Katzenberg, said that he did not know if the shortfall reflected a short-term retail issue or a slackening of demand.
While hotel occupancy rates were high in 2000, some market studies noted a slackening of the occupancy rate toward the end of the year.
But Colonel Glantz concludes, after scrutinizing the documents, that the Red Army initially made every reasonable effort to come to the Poles' assistance and later chose not to -- Stalin's political considerations aside -- because such action would have required a major reorientation of military efforts and a consequent slackening of the main offensive against German forces.
Our argument is that there is a collapse of the A/P border due to a transient slackening of the epigenetic control exerted by the Pc-G and trx-G genes.
There was a scattering of applause, followed by several deep breaths and a visible slackening of jaws as waves of the truffle's musky, intoxicating aroma followed in its wake.
It marks a distinct slackening of the rules since I worked there.
The announcement, combined with similar shortfalls from Apple Computer and Intel, could indicate a widespread slackening of demand for computers.
