challenging
US /ˈtʃæləndʒɪŋ/
・UK /ˈtʃælɪndʒɪŋ/
A2
adjecitve
- Difficult to do
verb
- To formally invite someone to compete at something
- To question the correctness of something
Examples
The tasks were not challenging enough for me and I got bored.
We have changed the course to make it more challenging.