Exist longer than (7)
(Other definitions for outlast that I've seen before include "Lout sat (anag.)" , "Live longer than" , "Endure beyond" , "Go on longer than" , "Endure longer than" .)
(Other definitions for outlive that I've seen before include "Die after" , "Survive beyond (another)" , "weather" , "Survive longer than" , "Go on longer than" .)