Someone who, having intimate knowledge of a company, takes action to destroy that company from the inside.
A certain corporate bookstore treats their store-level employees like they are worth less than dirt. JoAnna, a long-time employee of said bookstore, is sick of corporate abuse and no longer cares whether or not she receives minimum wage to sling coffee. She's the fifth pillar - she will do everything in her power to destroy this bookstore with the knowledge she has as an employee.
by Chaucer October 13, 2013
Can you define these popular missing words?