flatline

/ ˈflætˌlaɪn /

verb

1. to die or be so near death that the display of one's vital signs on medical monitoring equipment shows a flat line rather than peaks and troughs
2. to remain at a continuous low level

Example Sentences

Both watched attendance spike in the first few seasons in their new homes, only to flatline to Metrodome-era levels.

From Los Angeles Times

Mr. Blair watched his engagement flatline.

From New York Times

"The pattern we see across many early hominins is similar to all other mammals. Speciation rates increase and then flatline, at which point extinction rates start to increase. This suggests that interspecies competition was a major evolutionary factor."

From Science Daily

That flatline is stoking questions about whether the final phase in fighting inflation could prove more difficult for the Federal Reserve.

From New York Times

All we know is that the state is claiming that they got a flatline on the EKG in the control center behind Kenny, but there’s nobody that comes out and actually checks.

From Slate