With all this, she, the elder of the sisters, was not yet twenty, and they had both been educated, since they were about twelve years old and had lost their parents, on plans at once narrow and promiscuous, first in an English family and afterwards in a Swiss family at Lausanne, their bachelor uncle and guardian trying in this way to remedy the disadvantages of their orphaned condition.
There are no more uses of "promiscuous" in the book.
Show samples from other sources
She has a reputation as a promiscuous party girl.
He acquired genital herpes during a period of promiscuity in his youth.