A miraculous occurrence can be providential or heaven-sent, or just peculiarly fortunate and appropriate. In any event, as the word suggests, it has the character of a miracle.

The adjective miraculous has origins in the Latin word miraculum, meaning "object of wonder." It's often used to describe religious happenings, such as a direct answer to one's prayer. In a more secular context, a "miraculous comeback" is when a football team that's down by 30 points at halftime ends up winning the Super Bowl.

Definitions of miraculous

adj peculiarly fortunate or appropriate; as if by divine intervention

heaven-sent, providential
having unexpected good fortune

adj being or having the character of a miracle

marvellous, marvelous
not existing in nature or subject to explanation according to natural laws; not physical or material

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