sync also synch 
/ˈsɪŋk/ noun
/ˈsɪŋk/ noun Meaning:
in sync 1 : in a state in which two or more people or things move or happen together at the same time and speed
▪ The dancers moved in sync. ▪ The film's sound and picture need to be in sync. — often + with ▪ She moved in sync with her partner. 2 : in a state in which two or more people or things agree with or match one another and work together properly
▪ Our ideas are in sync. — often + with ▪ The quarterback was in sync with his receivers. ▪ The President is not in sync with [=the President does not understand] the interests and concerns of the people. ▪ Her views are in sync with [=her views agree with] our own.
▪ The dancers moved in sync. ▪ The film's sound and picture need to be in sync. — often + with ▪ She moved in sync with her partner.
▪ Our ideas are in sync. — often + with ▪ The quarterback was in sync with his receivers. ▪ The President is not in sync with [=the President does not understand] the interests and concerns of the people. ▪ Her views are in sync with [=her views agree with] our own.
out of sync 1 : in a state in which two or more people or things do not move or happen together at the same time and speed
▪ Some of the soldiers were marching out of sync. ▪ The soundtrack was out of sync so they stopped the film. — often + with ▪ She was out of sync with the other dancers. 2 : in a state in which two or more people or things do not agree with or match one another
▪ All the clocks in the office are out of sync. [=all the clocks show different times] — often + with ▪ His actions are completely out of sync with our goals.
▪ Some of the soldiers were marching out of sync. ▪ The soundtrack was out of sync so they stopped the film. — often + with ▪ She was out of sync with the other dancers.
▪ All the clocks in the office are out of sync. [=all the clocks show different times] — often + with ▪ His actions are completely out of sync with our goals.
— see also lip-synch
