frustrator means someone who frustrates (hinders, thwarts, disconcerts) the plans or aims of another person. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
noun
- Someone who frustrates (hinders, thwarts, disconcerts) the plans or aims of another person.“Technology will be the ultimate facilitator or frustrator of international crime. In either case, the United States will be at the center as the principal exporter or victim of criminal activity.”