Godspeed
exclamation/ˌɡɒdˈspiːd/
/ˌɡɑːdˈspiːd/
(old-fashioned or literary)- used to express good wishes to a person starting on a journey
- She wished them Godspeed on their journey home.
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Godspeed
Definition of Godspeed exclamation from the Oxford Advanced Learner's Dictionary