Add no cap when a claim sounds hard to believe but you want people to take it seriously. It can follow a compliment, an achievement, or a sincere opinion. Cap is the opposite: a claim that is false or exaggerated.
In a sentence
“That was my best round all week, no cap.”
In other words: I really did just play my best round of the week.
Original example written for the JANK guide.How to use no cap
Merriam-Webster traces this phrase to African American English. Its popularity online does not make it a new invention of social media. The phrase signals sincerity; the rest of the sentence tells you what the speaker is being sincere about.
About this definition
Reference: Merriam-Webster: no cap. Meaning checked October 16, 2026.
Usage varies by community and context. Examples illustrate the meaning and are not quotations from the reference.