middle-aged

adjective3

1. •
   Of or relating to middle age or a middle-ager; neither old nor young.

   • The person of interest is a middle-aged man seen acting strangely in the security camera's video.
2. •
   Characteristic of middle-aged people.

   • Well, perhaps that beige-on-beige color scheme may be a little middle-aged for a young artist's apartment; a little repainting won't hurt anything.
3. •
   (no longer used) Belonging to the Middle Ages; medieval.

   • The reading and perusing of middle-ag’d Antiquities. — 1710