vain
/veɪn/
adjective
- Having too high an opinion of one's own appearance, abilities, or worth; conceited.
- He's too vain to admit that he made a mistake.
- She was so vain that she checked her reflection in every window she passed.
- The vain actor spent hours choosing the perfect outfit for the premiere.
- Producing no result; useless or unsuccessful.
- It was a vain hope that the storm would pass before nightfall.
- They made a vain attempt to rescue the cat from the tree.
- All our efforts to convince him were in vain.