flatline
verb [ I ]
uk/ˈflætlaɪn/ usto remain at the same, usually low, level:
For the past two years, both the job market and house prices have flatlined in the area.
The party has spent the last three months flatlining with a 34% popularity rating in the monthly polls.
flatlining
noun [ U ]
The effects of the music industry's flatlining have been felt by retailers.