maindifficulty
nounUK /meɪn ˈdɪfɪkəlti/
US /meɪn ˈdɪfɪkəlti/
The biggest problem that makes something hard to do.
The main difficulty was finding a way across the river.
OTHER MEANINGS
2. The most important thing that stands in the way of finishing a task.
Our main difficulty is that we don't have enough time.
3. The hardest part of learning something new.
For many students, the main difficulty is remembering all the new words.
4. The biggest reason something cannot be done easily.
The main difficulty with the plan is its high cost.