(of an idea or an opinion) formed too early, especially without enough thought or knowledge
You must judge each film on its own merits, without any preconceived notions about what it's like.
It's essential to approach the discussion with an open mind and without preconceived notions.
The artist encouraged viewers to experience the artwork without preconceived judgments.
The team went into the project without preconceived expectations, allowing for creativity.
Preconceived ideas about the novel were challenged after reading it thoroughly.
