On fleek means perfectly executed or styled. It was popularized by a Vine video in 2014. A young woman named Kayla Newman said her eyebrows were "on fleek." The phrase spread. It was used by brands. It was added to dictionaries. It peaked. It faded. It is still used, but with irony.

On fleek is a compliment. It means your outfit is perfect. Your makeup is perfect. Your hair is perfect. It is a word of approval. It is also a word of a moment. It is tied to a specific time. It is a time capsule. It holds a year. It holds a vibe.

Related slang

• Snatched: looking perfect.
• Slay: to do something exceptionally well.
• Fierce: bold and impressive.
• Drip: stylish fashion.

On fleek is not for formal settings. It is for friends, for selfies, for moments of confidence. It is a small celebration. It says, "I look good." That is a good thing to say. Say it when you mean it. But know that it is dated. That is part of its charm.