prevent
verb (used with object)
to keep from occurring; avert; hinder.
has been preventing
-
present perfect progressiveof prevent (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
As the DNA accumulates, it interacts with an RNA molecule that has been preventing the toxin from being made.
From Science Daily ● Oct. 31, 2026
It has been preventing any significant shift in the position of the jet stream, and limiting the chance of more settled, drier conditions.
From BBC ● Feb. 5, 2026
One recent focus for Roberts has been preventing agencies from increasing the cost of public records.
From Seattle Times ● Mar. 10, 2023
The need for cautious communication Dr. Chukwu told me, and has said publicly elsewhere, that one challenge in Nigeria has been preventing stigmatization of anyone under surveillance as well as Ebola survivors.
From Forbes ● Sep. 23, 2014
Though American diplomats are actively encouraging reconciliation talks, the overriding U.S. focus has been preventing Libya from becoming a haven for al-Qaeda or Islamic State terrorist networks.
From Washington Post
