Friememy 

Someone who pretends to be your friend while running around talking bad about you behind your bad.

I thought Sally was a friend of mine. She turned into a friememy at work when she stabbed me in the back.

Friememy by Kendra19 September 15, 2010

Frienemy

A "toxic" person who poses as a friend but subconsciously or consciously wishes you harm.

Frienemy by Peat Bog Man February 6, 2002

Best Frienemy 

Someone who's your best friend but your enemy at the same time
or your best friend that you somehow hate at the same time

"she's my best Frienemy"

Best Frienemy by Satanic Egg April 5, 2019

Frienemy

A person who you treat and whom treats you as a friend but if they are given a chance would "cut your throat" or get one over on you/put themselves first if it would benifit themselves, or they would gain an advantage over you. Similar to an enemy.

A Frienemy are most female squash players i.e a person who you travel the pro squash circuits, hang aroung with each other, share life stories and rooms but all the time are looking for weaknesses with you to have the edge over you in competition such as spotting your illness/injury are.
You run out of sports drink , your frienemy will not give you a tiny bit of theirs until they have finished thier competition, even though they have more than they need.

Frienemy by Urban Dictionary April 9, 2008

Frienemy

A frienemy is someone, who is your friend but also an enemy.
It is a word between love and hate.

"We are frienemies since I can remember!"

Frienemy by Xzerbanato (Philosoph und Krieger) October 16, 2002

Frienemy

(Freh-nah-mee) 1. A person who acts like your friend, but is a backstabber when you have your back turned. 2.This kind of person creates malicious gossip about his or her friends due to incapability to deal with his or her jealous feelings towards them. 3. A hater.

Because she saw that Susan got a full ride scholarship, and she didn't, Megan became such a frienemy.

Frienemy by Chris Reeds October 14, 2009

Frienemy

Friend + Enemy = frienemy

An enemy who uses friendship to conceal their attacks.

Jack: "Jenny, you should watch your back with Gill, cause before you came she was telling everyone your secret!"

Jenny: "What! she's such a frienemy!"

Frienemy by Erinski Easy December 19, 2008