Having good fortune; receiving good from uncertain or unexpected sources; lucky.Bringing or presaging good fortune; resulting favorably, as something uncertain; having a happy issue; auspicious; felicitous: as, a fortunate speculation; a fortunate accident.Synonyms Felicitous, Lucky, etc. (See happy.) Fortunate, Successful, Prosperous, favored. Fortunate implies the attainment of success more by the operation of favorable circumstances, or through accident, than by direct effort; successful denotes that effective effort has been made; prosperous has nearly the same meaning as successful, but does not at all emphasize the effort made, and applies rather to a series of things than to a single event. We say a fortunate gambler, a successful merchant, a prosperous line of business.n. In astrology, a favorable planet. Nares. See extract under fortitude, 3.To make fortunate; prosper.