1. people who appear to be friends but whose actions or words reveal hostility, rivalry, or lack of genuine affection; friends who are also competitors or adversaries.
Usage: informal; plural noun (singular: frenemy); portmanteau of 'friend' and 'enemy'

Examples

• She realized her coworkers were frenemies when they smiled to her face but gossiped behind her back.
• Social media has made it easier to maintain relationships with frenemies we might otherwise have lost touch with.
• He kept his frenemies close because he wanted to know what they were planning.
• The two competitors pretended to be friends at industry events, but everyone knew they were frenemies.
• She finally unfollowed her frenemies on Instagram to avoid their passive-aggressive comments.
• Frenemies often congratulate you on your success while secretly hoping you fail.