unteachable

An unteachable person is someone who refuses to learn or accept new ideas and information. They often believe their own way is the only correct one.

The word "unteachable" is often used to describe people who are stubborn, opinionated, or set in their ways. This doesn't mean they can't think for themselves - it's just that they're very resistant to being told something new or hearing a different perspective. You might say someone is unteachable if they refuse to listen to advice from others, especially if it challenges their own opinions and habits. It's like trying to explain a complex math problem to someone who has already made up their mind about the answer - no matter how clearly you explain it, they won't budge. In some cases, being unteachable can be a sign of pride or ego, where someone thinks they know everything and doesn't need to learn from others.