frenemy
Noun
Meaning
(humorous) Someone who pretends to be your friend, but is really your enemy.
(humorous) A fair-weather friend who is also a rival.
Source: en.wiktionary.orgSynonyms
Examples
He might have been directing such a proclamation to frenemy Marc Bolan, whom he would very quickly eclipse.
"Jessica Knoll introduces you to your new best frenemy, and you're going to love it.
Running through the narrative is the escalating tension between Hamilton and his political frenemy Aaron Burr, played with Teflon bonhomie and slow-simmering rage by Odom.
Their shareholders would not appreciate confidential information or intellectual property to be shared with a competitor, friend, enemy or frenemy.
For many leaders, digital can be a “frenemy."
Sometimes though, it can be hard to tell if your peers have your best interests in mind, which is why it's important to look out for any signs that your friend is actually more of a "frenemy."