A word I haven't seen for quite a while. O.Henry puts it into the mouth of a cowboy in New York for the first time,
when he meets a former cowboy buddy, who has been living
in New York for seven years, and has become citified.
Not a word I would expect an ex-Rough Rider to know.
I had forgotten the etymology, so I looked it up:

Webster's 1913 Dictionary

Definition: \Ef*fete"\, a. [L. effetus that has brought forth,
exhausted; ex + fetus that has brought forth. See {Fetus}.]
No longer capable of producing young, as an animal, or fruit,
as the earth; hence, worn out with age; exhausted of energy;
incapable of efficient action; no longer productive; barren;

Effete results from virile efforts. --Mrs.

If they find the old governments effete, worn out, . .
. they may seek new ones. --Burke.

Would you say the quote from Mrs. Browning was a double