Prosper \Pros"per\, v. t. [imp. & p. p. {Prospered}; p. pr. & vb. n. {Prospering}.] [F. prosp['e]rer v. i., or L. prosperare, v. i., or L. prosperare, v. t., fr. prosper or prosperus. See {Prosperous}.] To favor; to render successful. ``Prosper thou our handiwork.'' --Bk. of Common Prayer. All things concur toprosper our design. --Dryden.