concerning

1 of 2

preposition

con·​cern·​ing kən-ˈsər-niŋ How to pronounce concerning (audio)
Synonyms of concerningnext
: relating to : regarding

concerning

2 of 2

adjective

: causing concern or worry : creating reason for concern : troubling
found the latest reports very concerning
"It's extremely concerning that drivers still choose to give their attention to things other than the road when they're behind the wheel," said [Texas Department of Transportation] Executive Director James Bass.The Nueces County Record Star
… carbapenems should not be administered to patients with positive penicillin skin test results or a concerning history of a type I allergic response to penicillin.Alan R. Salkind et al.
concerningly adverb
Of course, South Carolina roads are also concerningly dangerous for sober drivers. In 2015, the state ranked 7th for traffic deaths overall … The Post & Courier [Charleston, South Carolina]
"The waivers have driven destruction in Native American burial sites. They have killed thousands of species and fragmented habitat. Most concerningly, there is zero accountability or consequence for these outcomes." Gloria Smith

Examples of concerning in a Sentence

Preposition we had a meeting with the principal today concerning the new policy on student-run organizations
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Stolen data comes with ‘deadly outcomes’ Legal and health experts said breaches of health care information can be among the most concerning. Suzanne King, Kansas City Star, 6 Jan. 2026 The situation on the grounds became so concerning; at least two federal judges refused to sentence defendants to MDC in 2024 because of the derelict environment, The New York Times reported. Alisha Ebrahimji, CNN Money, 6 Jan. 2026 Even more concerning, more than 90% of the H3N2 infections analyzed were a new version — known as the subclade K variant — that differs from the strain in this year’s flu shots. Mike Stobbe, Fortune, 6 Jan. 2026 Even more concerning, more than 90% of the H3N2 infections analyzed were a new version — known as the subclade K variant — that differs from the strain in this season’s flu shots. Mike Stobbe, Los Angeles Times, 6 Jan. 2026 See All Example Sentences for concerning

Word History

First Known Use

Preposition

1535, in the meaning defined above

Adjective

1740, in the meaning defined above

Time Traveler
The first known use of concerning was in 1535

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Cite this Entry

“Concerning.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concerning. Accessed 13 Jan. 2026.

Kids Definition

concerning

preposition
con·​cern·​ing
kən-ˈsər-niŋ
: relating to : about
news concerning friends

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