persistent
adjective
per·sis·tent
pər-ˈsi-stənt 
-ˈzi-
1
: existing for a long or longer than usual time or continuously: such as
a
: retained beyond the usual period
a persistent leaf
b
: continuing without change in function or structure
persistent gills
c
: effective in the open for an appreciable time usually through slow volatilizing
mustard gas is persistent
d
: degraded only slowly by the environment
persistent pesticides
e
: remaining infectious for a relatively long time in a vector after an initial period of incubation
persistent viruses
2
a
: continuing or inclined to persist in a course
b
: continuing to exist despite interference or treatment
a persistent cough
has been in a persistent vegetative state for two years
persistently
adverb
Examples of persistent in a Sentence
Contrary to persistent myth, Hoover was an activist.
—
Steve Forbes, Forbes, 30 June 2008
The high-water mark of such truckling might be the publication of the Cato Institute report "America's Record Trade Deficit: A Symbol of Strength." Freedom had become slavery; persistent deficits had become economic power.
—Eric Janszen, Harper's, February 2008
The silence started from your end just about the time you said good-bye to dear St. Elizabeth and it has been constant and persistent ever since.
—Archibald Macleish, letter, 11 July 1959
We were nagged by a persistent salesman.
He is one of the government's most persistent critics.
She has been persistent in pursuing the job.
He has been fighting a persistent cold.
Flooding has been a persistent problem in the area this year.
Persistent rumors that the business is for sale have alarmed the staff.
Steve Forbes, Forbes, 30 June 2008
The high-water mark of such truckling might be the publication of the Cato Institute report "America's Record Trade Deficit: A Symbol of Strength." Freedom had become slavery; persistent deficits had become economic power.
—Eric Janszen, Harper's, February 2008
The silence started from your end just about the time you said good-bye to dear St. Elizabeth and it has been constant and persistent ever since.
—Archibald Macleish, letter, 11 July 1959
We were nagged by a persistent salesman.
He is one of the government's most persistent critics.
She has been persistent in pursuing the job.
He has been fighting a persistent cold.
Flooding has been a persistent problem in the area this year.
Persistent rumors that the business is for sale have alarmed the staff.
Recent Examples on the Web
Three more ski areas in Colorado are set to close up shop at the end of the week due to persistent warm weather and low snowpack.
—Christa Swanson, CBS News, 31 Mar. 2026
The arm-side miss fell in line with a persistent spring-training pattern for Sasaki, who struggled with command from his first Cactus League start through his Freeway Series appearance last week.
—Senior Editor, Los Angeles Times, 31 Mar. 2026
Gold rose on Tuesday, but remained on track for its steepest monthly decline since October 2008, as persistent inflation worries and expectations of higher interest rates due to the impact of the Iran war weighed on the non-yielding metal.
—Ashitha Shivaprasad, USA Today, 31 Mar. 2026
High levels of student debt influence specialty selection and practice location decisions, contributing to persistent shortages in primary care and underserved communities.
—Sreedhar Potarazu, Baltimore Sun, 30 Mar. 2026
See All Example Sentences for persistent
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show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Christa Swanson, CBS News, 31 Mar. 2026
The arm-side miss fell in line with a persistent spring-training pattern for Sasaki, who struggled with command from his first Cactus League start through his Freeway Series appearance last week.
—Senior Editor, Los Angeles Times, 31 Mar. 2026
Gold rose on Tuesday, but remained on track for its steepest monthly decline since October 2008, as persistent inflation worries and expectations of higher interest rates due to the impact of the Iran war weighed on the non-yielding metal.
—Ashitha Shivaprasad, USA Today, 31 Mar. 2026
High levels of student debt influence specialty selection and practice location decisions, contributing to persistent shortages in primary care and underserved communities.
—Sreedhar Potarazu, Baltimore Sun, 30 Mar. 2026
See All Example Sentences for persistent
Cite this Entry
“Persistent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/persistent. Accessed 2 Apr. 2026.
Copy CitationKids Definition
persistent
adjective
per·sis·tent
pər-ˈsis-tənt
-ˈzis-
1
: continuing, existing, or acting for a long or longer than usual time
a persistent cold
persistent gills
2
: stubbornly determined
persistently
adverb
Medical Definition
persistent
adjective
per·sis·tent
-tənt
1
: existing or continuing for a long time: as
a
: effective in the open for an appreciable time usually through slow volatilizing
mustard gas is persistent
b
: degraded only slowly by the environment
persistent pesticides
c
: remaining infectious for a relatively long time in a vector after an initial period of incubation
persistent viruses
2
: continuing to exist despite interference or treatment
a persistent cough
has been in a persistent vegetative state for two years
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