pretension
🇺🇸
/prɪˈtenʃn/
🇬🇧
/prɪˈtenʃn/
Trying to show off by acting more important or smarter than you really are.
He didn't like her because of her pretension to be an expert in everything.
A claim that you can do something or be something, even if it's not true.
The author made no pretension of being an expert on the subject.