Quixotic : extremely idealistic; unrealistic and impractical.Wasteful : (of a person, action, or process) using or expending something of value carelessly, extravagantly, or to no purpose.Profitable : (of a business or activity) yielding profit or financial gain.Fantastic : extraordinarily good or attractive.Practical : of or concerned with the actual doing or use of something rather than with theory and ideas.Antonym of Quixotic is Practical