Unlike "obstacle," "test," or "hardship," does the word "challenge" imply a positive nuance?

Native speaker’s answer
Rebecca
Yes, it often does imply something positive! A "challenge" is something difficult or new that is meant to be seen as an opportunity for growth and learning. Like here, they're saying that if someone has a challenging task, they're often able to do it, even if it seems difficult. Ex: It was a challenging task, but we learned a lot. Ex: I think that will be a challenge. But I'm sure we can do it.