Godspeed definition: good fortune; success (used as a wish to a person starting on a journey, a new venture, etc.).. See examples of GODSPEED used in a sentence. Definition of Godspeed Godspeed is an interjection used to express good wishes to someone embarking on a journey or endeavor. It implies a hope for the safety, success, and prosperity of the traveler or person undertaking a significant task. Etymology The term Godspeed originates from the Middle English phrase “God spede you,” which translates to “God prosper you.” The word “spede” is derived from the Old English word “spēdan,” meaning “to succeed” or “to prosper ... Learn how to use the phrase " godspeed " to wish someone success and safety on their journey or venture. Find out its history, related terms, and examples of usage in different contexts. Godspeed is an old exclamation to wish someone good luck when they are setting out on a journey. Learn how to pronounce it, see translations and examples, and find related words and phrases.