concerning
Americanpreposition
adjective
preposition
adjective
Etymology
Origin of concerning
First recorded in 1375–1425; concern ( def. ) + -ing 2 ( def. )
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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.
Excessive sugar consumption is especially concerning because its harmful effects on young children are already well established.
From Science Daily ● Jul. 29, 2026
Judge Lydia Kay Griggsby on Friday called Goldstein’s conduct “serious and concerning, not only in terms of the nature of it but its breadth.”
From The Wall Street Journal ● Jul. 24, 2026
Cricket NSW chief executive Lee Germon said after he was charged in April that the allegations were "concerning" and that the body took them "very seriously".
From BBC ● Jul. 22, 2026
"In the long run, other issues concerning straits will arise," Domergue said, citing the Taiwan Strait, given China's declared territorial ambitions in Southeast Asia, or the Strait of Malacca, shared by Singapore, Malaysia, and Indonesia.
From Barron's ● Jul. 21, 2026
Several people had followed up Galileo’s lead by the 1660s and, as we have seen, Malpighi in particular had already made important discoveries, especially those concerning the circulation of the blood, with the new instrument.
From "The Scientists" by John Gribbin
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.