more challenging

adjective
UK /mɔː ˈtʃæl.ɪn.dʒɪŋ/
US /mɔːr ˈtʃæl.ɪn.dʒɪŋ/

Harder to do than something else.

The second puzzle was more challenging than the first one.


OTHER MEANINGS

2. Needing more work or thought to finish.

This homework is more challenging, so I need more time.

3. Making you try harder or do your best.

The coach gave us a more challenging exercise today.

4. Not easy, but still possible with effort.

Reading a longer book is more challenging, but I like it.