Meddle with; to alter something or damage it.
In the context of the film, a 'valid' is a genetically engineered individual
An 'invalid' is an individual conceived naturally; not genetically engineered
Discriminating against an individual based on their genes
A condition of the eye, commonly called short-sightedness
Another term for invalid. Also called a God-child.
An invalid who adopts the identity of a valid, impersonating them through posession of their genetic material
A derogatory term for a borrowed ladder. It is also a play on the word 'degenerate', meaning an individual of exceedingly low status