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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.

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

From MarketWatch • Dec. 21, 2025

“We finally have a tactical euphoria warning signal for the first time in 5 years, and for the first time in 18 years excluding COVID,” wrote credit strategists at Deutsche Bank, led by Steve Caprio.

From Barron's • Oct. 20, 2025

In this condition, the warning signal doesn’t stop even after the injury has healed.

From Science Daily • Oct. 10, 2025

Liverpool's relative stroll towards a 20th title carries a heavy warning signal to the rivals who must now attempt to knock the Premier League crown off their heads next season.

From BBC • Apr. 28, 2025

She tried to smile, but it felt more like she was baring her teeth at her friend, a warning signal to stay away.

From "Far from the Tree" by Robin Benway

warning signal

Example Sentences

Related Words