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warning signal

NOUN

alarum

Synonyms

STRONG

alert bell signal siren warning

WEAK

call to arms

NOUN

beacon

Synonyms

STRONGEST

flare lantern radar

STRONG

alarm alert balefire beam bonfire guidepost heliograph lamp lighthouse lodestar pharos rocket sign watchtower

WEAK

signal fire smoke signal

NOUN

distress signal

Synonyms

WEAK

Mayday SOS alarm burglar alarm call for help danger signal fire alarm flare notice to mariners signal of distress

NOUN

high sign

Synonyms

WEAK

alert signal the nod the wink

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.

So how should investors play the current warning signal?

From MarketWatch • May 7, 2026

Analysts said the data is a warning signal.

From Barron's • Mar. 24, 2026

The clogged pathways are known as "enlarged perivascular spaces," and the findings suggest they could serve as an early warning signal for Alzheimer's, the most common form of dementia.

From Science Daily • Jan. 3, 2026

The Department for Health and Social Care said that genomics - the study of genes - and AI would be used to "revolutionise prevention" and provide faster diagnoses and an "early warning signal for disease".

From BBC • Jun. 21, 2025

I know it’s some kind of subconscious warning signal, and now instead of waiting for the memory to come to me, I close my eyes and reach out for it.

From "Flowers for Algernon" by Daniel Keyes

warning signal

Example Sentences

Related Words