MIDDLE AGED

Albanian

me moshë mesatare. (various references)

Arabic 

‏منتصف العمر. (various references)

Bulgarian 

на средна възраст. (various references)

Czech

středního vìku. (various references)

French

personne d'un certain âge, d'une cinquantaine d'années. (various references)

German

mittleren alters, spießig (middle class, stuffily, suburban), in mittlerem alter, in den mittleren jahren, altmodisch (frumpy, old fashioned), alt (old, ancient, alto, anciently, antiquarian). (various references)

Greek 

μεσήλικασ, μεσήλιξ. (various references)

Hungarian

középkorú (middle-aged), javakorabeli. (various references)

Pig Latin

iddlemay ageday.(various references)

Romanian

de vârstã mijlocie, între douã vârste (elderly). (various references)

Russian 

средних лет (middle-aged). (various references)

Serbo-Croatian

sredovečan. (various references)

Spanish

que no tiene más que, de edad mediana, de edad madura. (various references)

Swedish

medelålders-. (various references)

Turkish

orta yaşlı. (various references)

Ukrainian

середніх років. (various references)