Sectioned
In the United Kingdom, when someone is sectioned, that person is admitted to a hospital to be treated for mental health problems
Etiquette
A policy of polite behavior in public.
Hoi polloi
A term originally from the Greek language, which is a slang term in English to describe the working-class or 'common' members of society
Aristocracy
The elite ruling class of a country who are normally descendants of noble or royal blood
Stream of consciousness
A narrative technique used by O'Farrell in the novel which ignores convention of sentence or paragraph structure. Stream of consciousness reads like it were being spoken aloud with no regard for punctuation or the ordering of ideas
Mental health
Someone's psychological wellbeing