Noun

1. An amusement ride consisting of a buggy on a track that rises and falls and twists and turns
2. Any situation in which there are violent changes in status

   Our relationship was quite a roller coaster. Finally, I had enough of it and left her.

   The stock market has been quite the roller coaster in the last few weeks.

Synonyms

• big dipper
• switchback merry-go-round, ride, saga, seesaw, soap opera, stir, yo-yo

Adjective

1. Of or like a rollercoaster.

   Life with him was a rollercoaster ride.