The female equivalent cuckquean first appears in english literature in 1562, [6][7] adding a feminine suffix to the cuck. A related word, first appearing in 1520, is wittol, which substitutes wit (in the sense … The meaning of cuck is a man whose wife is unfaithful :

He claimed that the term cuck had long been used on internet forums to attack anyone considered cowardly or lacking in principles.