persistent challenge

noun phrase
UK /pəˈsɪstənt ˈtʃælɪndʒ/
US /pərˈsɪstənt ˈtʃælɪndʒ/

A problem that keeps coming back and is hard to fix.

Learning to ride a bike was a persistent challenge for him until he practiced every day.


OTHER MEANINGS

2. A task that keeps testing your patience over a long time.

Keeping the garden free of weeds is a persistent challenge.

3. A difficulty that does not go away even after you try to solve it.

The team faced a persistent challenge in finishing the project on time.

4. A hard situation that keeps returning in a game or sport.

Beating the champion team was a persistent challenge for the young players.