preconceived idea

The openers need to make sure they don't have too many preconceived ideas about how this pitch will play.

"You do have preconceived ideas about Hollywood actors, but they were so unassuming and willing to be one of us."

The results suggest that the participants’ preconceived ideas affected the chatbot’s output.

The absence of information left him unburdened by preconceived ideas.

St. John added that parents sometimes have preconceived ideas of how infants' sleeping spaces should be decorated.