[veɪn], (Adjective)

Definitions:
- having or showing an excessively high opinion of one's appearance, abilities, or worth
(e.g: their flattery made him vain)

- producing no result; useless
(e.g: a vain attempt to tidy up the room)


Phrases:
- in vain
- take someone's name in vain

Origin:
Middle English (in the sense ‘devoid of real worth’): via Old French from Latin vanus ‘empty, without substance’