IPA: /ˈblækˌlɪstər/
KK: /ˈblækˌlɪstər/
A person who creates a list of individuals or organizations that are to be avoided or punished, often for reasons such as disloyalty or misconduct.
The blacklister included several companies on the list for unethical practices.
Blacklister → It is formed from "black" (from Old English *blæc*, meaning dark or the color black) and "-lister" (derived from the word "list", meaning a record or a list). The term "blacklister" refers to someone who is included on a list of individuals or entities that are to be avoided or disapproved of, often due to negative actions or behaviors.
Think of the word 'black' representing something negative or undesirable, and 'list' as a record of names — a blacklister is someone whose name is on a list of those to be avoided.