in/out of sync

in sync (with someone or something)

1. Happening, functioning, or moving at the same time and pace as someone or something; simultaneously. Every soldier in the squad marched perfectly in sync. Is it just me, or is the audio not in sync with the movie?
2. Sharing the same or similar goals, ideals, desires, likes, dislikes, etc. with someone; having the same or similar perspectives or opinions as someone. Throughout the date, it just seemed like she and I were totally in sync about everything we brought up. If your team isn't in sync with one another, you're going to have a hard time getting this project done.
See also: someone, sync

out of sync (with someone or something)

1. Not or no longer happening, functioning, or moving at the same time and pace as someone or something else; in an unsynchronized or uncoordinated manner (with someone or something). The soldiers got in trouble for being out of sync while marching. Is it just me, or is the audio out of sync with the movie?
2. Not sharing the same or similar goals, ideals, desires, likes, dislikes, etc.; having the different or dissimilar perspectives or opinions. I don't think I'll go out with her again. It just seemed like we were out of sync on every topic. If your team is out of sync with one another, you're going to have a hard time getting this project done.
See also: of, out, someone, sync
Farlex Dictionary of Idioms.

*out of sync

uncoordinated; unsynchronized. (An abbreviation for synchronization. *Typically: be ~; get ~.) Our efforts are out of sync. My watch and your watch are out of sync.
See also: of, out, sync
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

in sync

If two things are in sync, they match or happen together as they should. Note: `Sync' is sometimes spelled `synch'. They swayed back and forth, more or less in sync with the music. Mr D and Mr B nodded perfectly groomed grey heads in sync.
See also: sync

out of sync

If two things are out of sync, they do not match or do not happen together as they should. Note: `Sync' is sometimes spelled `synch'. Normally, when demand and supply are out of sync, you either increase the supply, or you adjust the price mechanism. I think this decision is out of sync with reality.
See also: of, out, sync
Collins COBUILD Idioms Dictionary, 3rd ed.

in (or out of) sync

working well (or badly) together; in (or out of) agreement.
Sync (or synch ) is an informal abbreviation of synchronization .
1997 Sunday Times The most serious obstacle is the fact that the British economy's cycle is out of sync with Europe.
See also: sync
Farlex Partner Idioms Dictionary

in/out of ˈsync

(informal) moving or working/not moving or working at exactly the same time and speed as somebody/something else: The soundtrack is not in sync with the picture. Can we try that part of the dance again? I think we were out of sync.
Sync is a short form of synchronization.
See also: of, out, sync
Farlex Partner Idioms Dictionary

out of sync

(...sɪŋk)
mod. uncoordinated; unsynchronized. My watch and your watch are out of sync.
See also: of, out, sync
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • in sync
  • in sync (with someone or something)
  • in phase
  • in phase (with someone or something)
  • in phase/out of phase
  • get in sync (with someone or something)
  • get out of sync (with someone or something)
  • be out of sync (with someone or something)
  • out of phase
  • out of sync