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Synonyms

alarming

American  
[uh-lahr-ming] / əˈlɑr mɪŋ /

adjective

  1. causing alarm or fear.

    an alarming case of pneumonia; an alarming lack of respect.


Other Word Forms

Etymology

Origin of alarming

First recorded in 1670–80; alarm + -ing 2

Explanation

Something that's alarming is disturbing or upsetting. It can be alarming when you hear a sudden, loud crash of thunder. The idea of climate change is very alarming to many people, and the sound of a police car's siren is alarming when you're driving. Things that are alarming grab your attention, and either frighten you or at least unsettle you. The adjective alarming comes from alarm, via the Old French alarme, which is rooted in the Italian interjection all'arme, a rally or warning cry, "to arms!"

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Vocabulary lists containing alarming

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.

The implications are alarming, since there currently are four industry groupings within the S&P 1,500 index that have trailing two-year alphas of at least 100 percentage points.

From MarketWatch • May 18, 2026

"While it can look alarming, the plant usually suffers no permanent damage. The webs are there to protect the caterpillars from predators."

From BBC • May 13, 2026

These damaging notions are doubly alarming when one remembers that the target audience for this publication is so young.

From Salon • May 8, 2026

That sounds alarming, but it amounts to corporate restructuring ahead of his rocket company’s record-setting initial public offering.

From Barron's • May 7, 2026

I glanced around the walls, which were covered with shallow boxes displaying alarming stick insects and bright multicolored butterflies.

From "The Evolution of Calpurnia Tate" by Jacqueline Kelly

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