- issue
- difficulty
- worry
- trouble
- difficult situation
- complication
- muddle
- mess
- snag
- mix-up
- drawback
- hitch
- obstacle
- stumbling block
- hiccup
- hurdle
- catch
- setback
- vexed question
- catch-22
- the rub
- quandary
- plight
- predicament
- hornets' nest
- can of worms
- misfortune
- Gordian knot
- misadventure
- mishap
- headache
- dilemma
- hassle
- prob
- fix
- pickle
- fly in the ointment
- tight spot
- job
- how-do-you-do
- facer
- gremlin
- nodus
- katzenjammer
- source of difficulty
- nuisance
- pest
- bother
- irritant
- source of trouble
- vexation
- thorn in one's side/flesh
- pain
- drag
- fair cow
- pain in the neck
Example Sentences of Problem
1. We need to solve this problem.
2. Communication can prevent many problems.
3. He faced a difficult problem today.
4. Let's discuss the main problem first.