Composed of
four
ten; 10; (arch.) book containing a collection of poems
Used in vocabulary (3 in total)
forty-ninth day after a person's death
shoulder pain (at about age forty)
at age forty, one has no doubts
Examples (4 in total)
We have been enjoying peace for more than 40 years.
I think she is over forty years old.
At forty, he does not get as angry as he used to.
It was not until he was forty that he began to study German.