vanity
n. uncountablen. too much pride in your own appearance or achievements. It describes the feeling that you are more important or attractive than you really are.
n. excessive pride in or admiration of one's own appearance, qualities, or achievements. Often carries a pejorative connotation of superficiality or narcissism.
His vanity prevents him from wearing his glasses in public.
The actor's vanity was so great that he insisted on approving every single photo used for the film's promotion.
The philosopher argued that human vanity is the primary driver of social competition, as people strive to project an image of success that exceeds their actual merit.
From va(i)n + -ity, from Middle English vanite, from Old French vanité, from Latin vānitas, from vānus, whence English vain. Doublet of vanitas.
Uncountable when referring to the personality trait; can be countable when referring to a specific piece of furniture (a dressing table).