>>6124655 (Lb)

RE: predicate act in law terms ( not grammar!)

A previous offense that can be used to enhance the sentence levied for a later conviction.

A crime, which is composed of the elements of a more serious crime, and which is committed for the carrying out of the more serious crime.

Under RICO… one of two or more related acts of racketeering necessary to establishing a pattern…. extortion and blackmail are examples of RICO predicate acts.

https://definitions.uslegal.com/p/predicate-act/