mainproblem
nounUK /ˌmeɪn ˈprɒbləm/
US /ˌmeɪn ˈprɑːbləm/
The main problem is the biggest thing that is wrong or hard to fix.
The main problem with our treehouse is that it has no roof.
RELATED WORDS
OTHER MEANINGS
2. The most important question that needs an answer.
The main problem in the story is how the hero gets home.
3. The biggest reason something does not work.
The main problem with the old car is its broken engine.
4. The hardest part of a task.
The main problem was finding enough wood for the fence.