noun
also synch
see also lip-synch
in sync
in a state in which two or more people or things move or happen together at the same time and speed
in a state in which two or more people or things agree with or match one another and work together properly
out of sync
in a state in which two or more people or things do not move or happen together at the same time and speed
in a state in which two or more people or things do not agree with or match one another