frenemy

plural frenemies

1. humoroussometimesSomeone who has traits of an enemy and a friend.

   Another enemy / Not even a frenemy.

   1987, by Eric B. and Rakim, “I Ain't No Joke”, in Paid in Full

   5 more examples

   Painting with a bland stroke, hardly mixing color on palette or canvas, working neatly, quickly, deftly, and a bit hygienically—like an Old World gentleman—over his “spontaneous” projects—indeed, “tickling” his way along, to borrow frenemy Picasso's devastating verb—he [Henri Matisse] seems never to be deeply involved or even slightly carried away by his work.

   1952 February 9, Manny Farber, “Art”, in The Nation, volume 174, number 6, page 140

   Frenemies who when you're down ain't your friend

   1998, Gregg Alexander, Rick Nowels, “You Get What You Give”, in Maybe You've Been Brainwashed Too, performed by New Radicals

   In France the Seine has all the advantages of Northernness (a quality underrated by our Gallic frenemy) but it is too fatally interested in Paris […]

   2001, John Lanchester, The Debt to Pleasure.

   You know when you dump a guy, only to discover years later that he's evolved into the perfect boyfriend—for the high-school frenemy who convinced you to dump him in the first place...?

   2004, Andrea Semple, The Ex-Factor, back cover

   So why did we break up? Enter Blaize St. John, frenemy extraordinaire. She came, she saw, she stole my boyfriend.

   2005, Joanne Meyer, Single Girl's Guide to Murder, back cover

2. humoroussometimesA fair-weather friend who is also a rival.

   So, we're definitely not going to be friends with Ferguson? Maybe we can be frenemies. A love-hate relationship's the next best thing.

   2008 April 6, Erin Ehrlich, Six Characters in Search of a House (King of the Hill), season 12, episode 17, spoken by Bill Dauterive (Stephen Root)