Definitions

signal

[sig-nl] / ˈsɪg nl /

ADJECTIVE

extraordinary, outstanding

Synonyms

STRONGEST

conspicuous momentous noteworthy noticeable salient

STRONG

arresting characteristic distinguished individual marked notable pronounced striking

WEAK

arrestive distinctive eminent exceptional eye-catching famous illustrious memorable peculiar prominent remarkable renowned significant

Antonyms

STRONGEST

inconspicuous insignificant obscure unimportant unnoticeable

STRONG

common ordinary vague

WEAK

unexceptional unimpressive unnoteworthy

NOUN

indication; authorization

Synonyms

STRONGEST

alarm beacon cue gesture indicator sign

STRONG

Mayday SOS alert bleep blinker flag flare go ahead mark movement nod okay omen tocsin token wink

WEAK

green light high sign

Antonyms

STRONG

denial refusal veto

VERB

indicate; give a sign to

Synonyms

STRONGEST

warn

STRONG

beckon communicate flag flash gesticulate gesture motion nod semaphore sign signalize wave 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.

In experiments with young mice, they activated a stress signal typically linked to aging.

From Science Daily • Apr. 3, 2026

The jurors appeared to signal which way they were leaning.

From Los Angeles Times • Apr. 3, 2026

Even if all goes well, it wouldn’t signal the end of Iran’s nuclear ambitions.

From Salon • Apr. 3, 2026

This created a “classic” mBB buy signal, but we don’t trade those.

From MarketWatch • Apr. 2, 2026

“She did, but I can’t get a signal and I don’t want to waste the charge I have left.”

From "Caterpillar Summer" by Gillian McDunn