vain

adjective4

1. •
   full of pride about how you look and about small things you have done

   • Every writer is a narcissist. This does not mean that he is vain; it only means that he is hopelessly self-absorbed. — 1959
2. •
   Effecting no purpose; pointless, futile.

   • Vain is the force of man / To crush the pillars which the pile sustain. — 1697
3. •
   Having no real substance, value, or importance; empty; void; worthless; unsatisfying.

   • I will not hear thy vain excuse — 1590
4. •
   Showy; ostentatious.

verb1

1. •
   (no longer used, old-fashioned) To frustrate.

noun1

1. •
   Acronym of vaginal intraepithelial neoplasia.