be on the way out/in

be on the way in

To be increasing in use or popularity; to be in the process of becoming fashionable. What fashion trends are on the way in this season?
See also: on, way

be on the way out

1. Literally, to be in the process of leaving or about to leave some place. I'm actually on the way out just now, so we'll have to leave the meeting until tomorrow. The doctor rang just as we were on the way out the door.
2. To be decreasing in use or popularity; to be in the process of becoming obsolete or nonexistent. Based on the low number of viewers it's had this season, this show is on the way out.
See also: on, out, way
Farlex Dictionary of Idioms.

be on the way ˈout/ˈin

be going out of/coming into fashion: Short skirts are on the way out.
See also: on, out, way
Farlex Partner Idioms Dictionary
See also:
  • be on the way in
  • the new black
  • vogue
  • setter
  • jet-setter
  • jet-setters
  • go out of fashion
  • out of fashion
  • in tune with the times
  • keep in step with the times