Definition:
: relating to sexual relationship with someone other than one's spouse
About the Word:
There is a curious discrepancy in the English language between the number of words to describe a man who has an unfaithful wife and the number to describe a wife so afflicted. There are considerably more words for the wronged male (cuckold, cornuto, horn, hoddypoll, tup, wittol, etc.) than there are for the woman (cuckquean is the only one I am aware of). This should not be taken as evidence of any lack of moral turpitude on the part of the female of the species.
In any event, in 1925 we get a nice gender-neutral word, extramarital, which can be used without fear of impugning either sex. The 1920s also saw the first use of sugar daddy (1926), and the famous whoopee of making whoopee (1924).
Example:
"For European men, and women too, for that matter, have their extramarital love affairs." — Carol Bird, The San Francisco Chronicle, 13 January 1929
