Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun roller_coaster

2 senses of roller coaster

Sense 1
roller coaster -- (anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year")
       => turbulence, upheaval, Sturm und Drang -- (a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence")

Sense 2
roller coaster, big dipper, chute-the-chute -- (elevated railway in an amusement park (usually with sharp curves and steep inclines))
       => elevated railway, elevated railroad, elevated, el, overhead railway -- (a railway that is powered by electricity and that runs on a track that is raised above the street level)
       => ride -- (a mechanical device that you ride for amusement or excitement)