Synchro
Technical
This word is commonly used in engineering and technology contexts.

The synchro system controls the timing of machinery operations.
Harmonious
In a broader sense, 'synchro' can refer to harmony in dance or music.

The dancers performed in perfect synchro, captivating the audience.
Metaphoric
You can use 'synchro' to describe relationships that are harmoniously aligned.

Their thoughts were in synchro, reflecting a deep understanding.
Compare with
synchronizationasynchronycoordinateharmonycongruence
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