The term "future endeavor" is normally used within a phrase extending best wishes to an individual. Dissected, the word "future" means "time that is to be or come hereafter," while "endeavor" means "to exert oneself to do or effect something; make an effort; strive," according to Reference.com.
To summarize, the term "future endeavor" is defined as any efforts or journeys to be pursued in the hereafter. This is typically used in popular phrases such as, "I wish you the best of luck in your future endeavors," or "Good luck in your future endeavors." The phrases are translated to, "I wish you the best of luck in any efforts or journeys that you may pursue from this point forward." Usages for this phrase are popular during graduations, or during celebrations for individuals who are finding new career paths. The phrase is considered to be a "goodbye and good luck" phrase.
The word "future" originated between 1325 and 1375 A.D. from either the Middle English term, "futur," or the Anglo-French, Old French and Latin term, "f?t?rus," meaning "about to be." "Endeavor" originated between 1350 and 1400 A.D. from the Middle English term, "endeveren," which stems from the phrase "putten in devoir," meaning "to make an effort" or "assume responsibility."