Definition of "roller-coaster" []

• Alternative spelling of rollercoaster. (noun)

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• "His symptoms worsened - headaches, spatial and balance problems, fogginess, in what Crosby would term a "roller-coaster" experience."
• "In years when it's mostly been about scenery-chewing, King conveys strength, confidence and compassion through restraint, even during the roller-coaster year Detective Lydia Adams had."
• "Lucy heard a collective gasp rise from the group, as if they were all on a roller-coaster ride together and their car had taken a sudden dip."