An adult who is sexually attracted to a minor, but will not do or say anything remotely sexual about them until that minor is the age of an legal adult.
Red flags for these kind of people would be things like someone saying they've waited for someone to turn 18
Lets say a girl turns 18 & a week later she decides to create an Onlyfans page & an adult replies with something like "I've waited for this" at that point it is fair to think they're a Closet pedo