more challenging
Definitions
Requiring greater effort, skill, or perseverance to accomplish or understand.
Presenting a higher degree of difficulty or a more demanding set of obstacles.
Examples
Learning a new language becomes more challenging as you get older.
The final level of the video game proved to be much more challenging than the previous ones.
Synonyms
more demanding tougher more arduous more taxing more difficult
Antonyms
easier less demanding simpler more manageable less strenuous