Sync

Oxford Advanced Learner's Dictionary, 8th edition
© Oxford University Press, 2010
sync
(also synch)
BrE /sɪŋk/
NAmE /sɪŋk/
noun
[uncountable] (informal)
in ˈsync
1 moving or working at exactly the same time and speed as sb/sth else
The soundtrack is not in sync with the picture.
2 in agreement with sb/sth; working well with sb/sth
His opinions were in sync with those of his colleagues.
out of ˈsync
1 not moving or working at exactly the same time and speed as sb/sth else
2 not in agreement with sb/sth; not working well with sb/sth
see also lip-sync, synchronization