middle-aged
US /ˌmɪd.əlˈeɪdʒd/
UK /ˌmɪd.əlˈeɪdʒd/

1.
paruh baya, setengah baya
being in the period of life between youth and old age, usually considered to be from about 45 to 65
:
•
My parents are both middle-aged.
Kedua orang tua saya paruh baya.
•
The survey targeted middle-aged professionals.
Survei tersebut menargetkan para profesional paruh baya.