in sync

in sync

1. Used other than figuratively or idiomatically: see in,‎ sync.

   The TV and the speakers are in sync.

2. Working well together; agreeing with each other.

   Antonym: out of sync

   • 2008, Katy Perry, Dr. Luke, Max Martin, “Hot n Cold”, in One of the Boys‎^[1], performed by Katy Perry:

     We / Used to be / Just like twins / So in sync

• “in sync”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “in sync”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.