Mintable is a term that you will see when researching or looking at token properties. A mintable token means the token creator can mint or add new tokens into circulation.
When it comes to new tokens or memecoins, a mintable property in the token safety section is one of the red flags. The token creator can infinitely print new tokens into circulation and this can cause the price to crash. Be careful with memecoins with this property.
Dexscreener and other token analysis tools can easily identify this property. Note that some utility tokens can also have this property because their tokens are locked.