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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

  • alarmingly adverb
  • unalarming adjective
  • unalarmingly adverb

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!"

Keep Reading on Vocabulary.com

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 ethics committee has gone through all of its processes, and they found some alarming facts," he said.

From BBC • Apr. 21, 2026

Delivery robots are both disappointing in their reality and alarming in their symbolic implication.

From Los Angeles Times • Apr. 14, 2026

Another alarming aspect of this opinion is that it really seems like it’s written with the Supreme Court in mind as its audience.

From Slate • Apr. 9, 2026

Although the surge in redemption requests among non-traded BDCs seems alarming, the firm believes investors are witnessing a liquidity-driven event fueled by fear, rather than a fundamental decline in credit quality.

From Barron's • Apr. 7, 2026

Most of the time, though, nothing more alarming than insects disturbed my vigils on the Peak.

From "My Life with the Chimpanzees" by Jane Goodall