Cuckservative: An insult used against a Republican who is perceived to be “too soft or disingenuous,” according to a story published August 13 in the New York Times. The lone definition posted on Urban Dictionary (dated July 29, 2015), is harsher:
A cuckservative is a self-styled “conservative” who will cravenly sell out and undermine his home country’s people, culture, and national interest in order to win approval with parties hostile or indifferent to them.
The word is a portmanteau, or blend, of cuckold—a man whose wife commits adultery—and conservative; it emerged from right-wing, white nationalist, and anti-Semitic forums and spread via the hashtag #cuckservative. According to the Times story:
The Southern Poverty Law Center, which monitors hate groups, called the term the “ultimate insult” that the white nationalist movement can deliver to politicians who they feel have veered too far to the left. “The term, at its core, may be racist,” the group said.