Also,
in sync. In a correlated or synchronized way; in accord, in harmony. For example,
If everyone were in phase we could step up the schedule, or
John and Pat often say the same thing at the same time; their minds are perfectly in sync . Both versions of this idiom refer to physical phenomena. The first, dating from the second half of the 1800s, alludes to being at the same stage in a series of movements. The second, a slangy abbreviation of
synchronization dating from the mid-1900s, alludes to exact coincidence in the time or rate of movement. Also see
in step;
phase in; for the antonym, see
out of phase.