0 A person's forties are the period in which they are aged between 40 and 49: --
Our house was built some time in the forties.
The temperature is expected to be in the forties tomorrow.
She's probably in her early forties.
1 the numbers 40 through 49: --
They are both in their forties (= between 40 and 49 years old).
Our house was built in the forties (= between 1940 and 1949).
The temperature will be in the forties (= between 40° and 49°) today.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
forties