Preconceived

I'm sorry that I don't conform to your preconceived notions of perfection.

It challenged my preconceived notions.

People are more inclined to believe in pseudoscience that flatters their preconceived notions.

It blew away all my preconceived notions.

A study looks at how preconceived notions, along with the appearance of a politician, can influence how you vote.