Having no real value or importance; worthless; unsubstantial; empty; trivial; idle.Producing no good result; destitute of force or efficacy; fruitless; ineffectual; useless; futile; unavailing.Light-minded; foolish; silly.Proud of petty things or of trifling attainments or accomplishments; elated with a high opinion of one's personal appearance, manners, or the like; courting the admiration or applause of others; conceited; self-complacent; also, proceeding from or marked by such pride or conceit: as, to be vain of one's figure or one's dress.Showy; ostentatious; pretentious.Bootless, abortive.See egotism.