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Definitions

in concert

ADJECTIVE
accordant
Synonyms
WEAK
agreeing conforming congruous harmonious
ADJECTIVE
agreeing
Synonyms
WEAK
congruent in unison
ADJECTIVE
harmonic
Synonyms
STRONGEST
melodic symphonic
STRONG
consonant musical
WEAK
accordant concordant dulcet euphonious harmonizing in chorus in harmony in tune in unison mellifluous melodious rhythmical sonorous sweet-sounding symphonious tuneful
Antonyms
STRONG
dissonant
ADJECTIVE
harmonious
Synonyms
STRONGEST
amicable balanced congenial coordinated cordial peaceful
WEAK
accordant adapted compatible concordant congruous consonant dulcet euphonious harmonic harmonizing in accord in chorus in harmony in step in tune in unison like matching mellifluous melodic melodious mix musical of one mind on same wavelength rhythmical silvery similar simpatico sonorous suitable sweet-sounding symmetrical sympathetic symphonic symphonious tuneful
Antonyms
STRONGEST
disagreeable hostile unfriendly
WEAK
cacophonous discordant dissonant harsh inharmonious opposed unlike
ADJECTIVE
symphonious
Synonyms
WEAK
accordant adapted amicable balanced compatible concordant congenial congruous consonant coordinated cordial dulcet euphonious harmonic harmonizing in accord in chorus in harmony in step in tune in unison like matching mellifluous melodic melodious mix musical of one mind on same wavelength peaceful rhythmical silvery similar simpatico sonorous suitable sweet-sounding symmetrical sympathetic symphonic tuneful
ADVERB
ensemble
Synonyms
STRONG
altogether
WEAK
all at once as a body as a group as a whole as one at once en masse
ADVERB
jointly
Synonyms
STRONGEST
accordingly collectively cooperatively in tandem mutually simultaneously together unitedly
STRONG
conjointly
WEAK
agreeably alike arm in arm coincidentally combined companionably concomitantly concurrently connectedly en masse hand in glove hand in hand harmoniously in a group in common in company with in conjunction in league in partnership in unison inextricably inseparably intimately reciprocally side by side similarly synchronically with one another
Antonyms
WEAK
singly
ADVERB
simultaneously
Synonyms
STRONGEST
together
WEAK
as one concurrently synchronously
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 cooperation in one breath in sync 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 cooperation in one breath in sync 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.

In his view, conventional medicine treats the body as discrete pieces, but it’s better to envision it as one system, where everything works in concert.

From Slate • Mar. 30, 2026

Vera Rubin will work in concert with Groq on demanding inference tasks.

From Barron's • Mar. 19, 2026

Bergman also will retain oversight of Disney’s streaming programming in concert with Walden.

From Los Angeles Times • Mar. 16, 2026

“Going forward, it’ll be a hybrid world with humans and agents interacting together, and agents acting in concert with and communicating with other agents,” Stifel analyst Adam Borg told MarketWatch.

From MarketWatch • Mar. 14, 2026

Certainly, the Department of Justice wanted him deported back to the United States to stand trial for his violations, possibly in concert with the Department of the Treasury, for income tax evasion.

From "Endgame" by Frank Brady