Lua error in Module:parameters at line 290: Parameter 1 should be a valid language or etymology language code; the value "GA" is not valid. See WT:LOL and WT:LOL/E.IPA(key): /ˈɹoʊlɚˌkoʊstɚ/
An amusement ride consisting of a buggy on a track that rises, falls, twists and turns.
(figurative, by extension) Any situation in which there are ups and downs, or violent changes.
Our relationship was quite a rollercoaster. Finally, I had enough of it and left her.
The stock market has been quite the rollercoaster in the last few weeks.
2019 July 14, Stephan Shemilt, “England win Cricket World Cup: Ben Stokes stars in dramatic finale against New Zealand”, in BBC Sport[1], London:
Morgan's men reversed their fortunes and swept into the final with three successive victories, including a memorable semi-final demolition of Australia. In the final, the rollercoaster continued, only for the heroics of Stokes to leave England as worthy champions, matching the achievement of the England women's team on the same ground two years ago.