pretension

Pretension is what you're guilty of when you boorishly try to impress other people with how important or clever you are.

When you speak with pretension, you're boastful and you puff yourself up as someone very important or of great worth. If you have literary pretentions, you mostly likely think you're a great writer, but you most likely are not. As you might imagine, this word has the same Latin roots as pretend and pretense. A pretension can also be the advancing of a claim.

Definitions of pretension
1

n the advancing of a claim

“his pretension to the crown”
“the town still puts forward pretensions as a famous resort”
Type of:
claim
an assertion of a right (as to money or property)

n a false or unsupportable quality

Synonyms:
pretence, pretense
Type of:
artificiality
the quality of being produced by people and not occurring naturally

n the quality of being pretentious (behaving or speaking in such a manner as to create a false appearance of great importance or worth)

Synonyms:
largeness, pretentiousness
Antonyms:
unpretentiousness
the quality of being natural and without pretensions
Types:
ostentation
pretentious or showy or vulgar display
Type of:
unnaturalness
the quality of being unnatural or not based on natural principles