medieval

US /ˌmed.iˈiː.vəl/
UK /ˌmed.iˈiː.vəl/
"medieval" picture
1.

relating to the Middle Ages (roughly from the 5th to the 15th century AD)

:
They visited a well-preserved medieval castle.
The course covers medieval history and literature.
2.

very old-fashioned or primitive

:
Their legal system seems quite medieval compared to modern standards.
The working conditions in that factory are almost medieval.