"Challengingly" Natural Recordings by Native Speakers
In a challenging manner; in a way that is difficult or demanding; making a task or situation difficult to overcome or achieve.
The word "challengeable" is an adjective that means capable of being challenged or disputed. It refers to something that is open to question, criticism, or opposition, often because it is questionable, uncertain, or debatable. In other words, something that is challengeable can be argued against or disputed because of its validity, accuracy, or truth.