Strong
Weak
- Arduous
The marathon was an arduous test of endurance. - Formidable
The opponent was a formidable competitor in the tournament. - Exacting
The exam was exacting and left students feeling overwhelmed. - Challenging
Climbing the mountain proved to be challenging for the inexperienced hikers. - Demanding
The job was too demanding for someone without prior experience. - Strenuous
The hike was strenuous but rewarding once we reached the summit. - Overwhelming
The amount of information to study was overwhelming. - Daunting
The idea of moving to a new country can be daunting. - Taxing
The long hours at work were taxing on her health. - Complex
The code had a complex logic that was hard to follow.