- of, pertaining to, characteristic of, or in the style of the Middle Ages: medieval architecture.Compare Middle Ages.
- Informal. extremely old-fashioned; primitive.
- of, relating to, or in the style of the Middle Ages
- informal old-fashioned; primitive
adv.1844, from medieval + -ly (2). adj.1827, “pertaining to or suggestive of the Middle Ages,” coined in English from Latin medium “the middle” (see medium (n.)) + aevum “age” (see eon). A descriptive term for people, objects, events, and institutions of the Middle Ages.