Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun problem

3 senses of problem

Sense 1
problem, job -- (a state of difficulty that needs to be resolved; "she and her husband are having problems"; "it is always a job to contact him"; "urban problems such as traffic congestion and smog")
       => difficulty -- (a condition or state of affairs almost beyond one's ability to deal with and requiring great effort to bear or overcome; "grappling with financial difficulties")

Sense 2
problem -- (a question raised for consideration or solution; "our homework consisted of ten problems to solve")
       => question, head -- (the subject matter at issue; "the question of disease merits serious discussion"; "under the head of minor Roman poets")

Sense 3
trouble, problem -- (a source of difficulty; "one trouble after another delayed the job"; "what's the problem?")
       => difficulty -- (a factor causing trouble in achieving a positive result or tending to produce a negative result; "serious difficulties were encountered in obtaining a pure reagent")