From Longman Dictionary of Contemporary Englishwhite-knuckleˌwhite-ˈknuckle adjective [only before noun] a white-knuckle ride at a fairground makes you feel excited and afraid at the same time
Examples from the Corpus
white-knuckle• a white-knuckle flight• Thrill to the spills of those white-knuckle rides and make it a day you and the kids will never forget. 