oldproblem
nounUK /ˌəʊld ˈprɒbləm/
US /ˌoʊld ˈprɑːbləm/
A problem that has been around for a long time and is hard to fix.
Traffic jams are an old problem in big cities.
OTHER MEANINGS
2. A familiar difficulty that people have faced for many years.
Losing socks in the laundry is an old problem for everyone.
3. A question or puzzle that has existed since long ago.
The mystery of the missing ship is an old problem for historians.
4. A repeated trouble that keeps coming back.
Forgetting passwords is an old problem for computer users.