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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.

Acute pain acts as a warning signal, starting when injured tissue, such as a stubbed toe, sends messages through the spinal cord to the brain.

From Science Daily • Apr. 27, 2026

Notably, a doji candle in September provided an early warning signal that upside momentum was faltering.

From Barron's • Jan. 5, 2026

Historically, the absence of a year-end rally has carried a warning signal.

From MarketWatch • Dec. 21, 2025

At the same time, there is a clear warning signal here.

From BBC • Sep. 6, 2025

A low-pitched hum breaks through the din, followed by an electronic beep, like a warning signal.

From "Spooked!" by Gail Jarrow

warning signal

Example Sentences

Related Words