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| if the worst comes to the worst; at worst (At worst the injury could mean months in the hospital.); in the worst possible case (Vanda Voytkevych); the worst case scenario (rechnik); at the very worst (rechnik) | |||
| at the worst | |||
in a worst-case scenario (In a worst-case scenario, a moderate earthquake on the Vancouver Island fault would create a potential tsunami that would impact not only Victoria but also Vancouver, Seattle, Bellingham, Olympia, and Tacoma.  dailyhive.com ART Vancouver) | |||