problem problem /ˈprɑːbləm/

noun

1. () A state of difficulty that needs to be resolved  ( job , prob [Informal] , problem )
   a state of difficulty that needs to be resolved
    She and her husband are having problems
   she and her husband are having problems
    It is always a job to contact him
   it is always a job to contact him
    Urban problems such as traffic congestion and smog
   urban problems such as traffic congestion and smog
   
2. () A question raised for consideration or solution  ( problem )
   a question raised for consideration or solution
    Our homework consisted of ten problems to solve
   our homework consisted of ten problems to solve
   
3. () A source of difficulty  ( prob [Informal] , problem , trouble )
   a source of difficulty
    One trouble after another delayed the job
   one trouble after another delayed the job
    What's the problem?
   what's the problem?