How to pronounce vain:
Example: "A conceited fool"
Example: "A fruitless search"
Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason.
Having no real substance, value, or importance; empty; void; worthless; unsatisfying.
Effecting no purpose; pointless, futile.
Example: "Vain toil; a vain attempt"
Showy; ostentatious.