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Definitions

in sync

[in singk] / ɪn ˈsɪŋk /

ADJECTIVE

concurrent

Synonyms

WEAK

circumstantial coeval coexisting coincident concerted concomitant contemporaneous incidental parallel synchronal synchronous

Antonyms

WEAK

disagreeing divergent nonconcurrent

ADJECTIVE

simultaneous

Synonyms

STRONGEST

concurrent

WEAK

accompanying agreeing at the same time coetaneous coeval coexistent coexisting coincident coinciding concurring contemporaneous contemporary dead heat synchronal synchronic synchronous with the beat

Antonyms

WEAK

asynchronous different divided following preceding separate

ADJECTIVE

together

Synonyms

WEAK

calm cool stable well-adjusted well-balanced well-organized

Antonyms

WEAK

imbalanced unstable upset

ADVERB

synchronously

Synonyms

WEAK

all at once all together as one at one fell swoop closely coincidentally collectively combined commonly concertedly concomitantly concurrently conjointly contemporaneously en masse hand in glove hand in hand in a body in concert in cooperation in one breath in tandem in unison jointly mutually on the beat side by side simultaneously synchronically unanimously unitedly with one accord with one voice with the beat

ADVERB

together

Synonyms

STRONGEST

closely collectively in tandem jointly simultaneously

STRONG

unitedly

WEAK

all together as one at one fell swoop coincidentally combined commonly concertedly concomitantly concurrently conjointly contemporaneously en masse hand in glove hand in hand in a body in concert in cooperation in one breath in unison mutually on the beat side by side synchronically unanimously with one accord with one voice with the beat

Antonyms

WEAK

apart individually separately

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.

"And every one of these independent cellular clocks appears to be in sync when you watch normal development. But are they communicating with each other? We've never thought deeply about that question before."

From Science Daily • Jun. 4, 2026

After an hour’s wait in the rain, they got their reward: Fireflies pulsing in sync, almost like a heartbeat.

From The Wall Street Journal • Jun. 3, 2026

A reading of 1.00 would mean they move exactly in sync.

From MarketWatch • May 26, 2026

When we catch up with them in the present day, the twins live a life perfectly in sync, their movements in rhythm, their telepathic communication expressed on-screen in typewriter-font subtitles.

From Los Angeles Times • May 15, 2026

“Oh my God, did you see that? They're in sync already.”

From "Starfish" by Akemi Dawn Bowman

in sync

Example Sentences

Related Words