The audio and video are in perfect synch.

I need to synch my phone with my computer.

The devices were synched to the same network.

I am synching my devices to ensure they have the latest updates.

The synchs of the two devices were perfectly aligned.

She loves to lip-synch to her favorite songs.

She lip-synched to the song during the performance.

She is lip-synching to her favorite song.

She was accused of lip-synching during her live performance.

She lip-synchs to her favorite songs.