Vertiginous
Vertiginous is a formal adjective used to describe something that causes or is likely to cause a feeling of dizziness especially because of great height.
// As a window washer for some of the city’s tallest skyscrapers, Victor had to quickly master working at vertiginous heights.
Endemic
When used for a plant or animal species, endemic describes something that grows or exists in a certain place or area, and often specifically something restricted to a particular locality or region. Endemic is also used to describe diseases that persist over time in a particular region or population. It can also mean “common in a particular area or field.”
// Our children were excited to finally see wild giant pandas—endemic to just three provinces in south-central China—during our family vacation.
// He eventually learned that low wages were endemic to his line of work, but he continued nevertheless to pursue his passion.
Faux pas
a slip or blunder in etiquette, manners, or conduct; an embarrassing social blunder or indiscretion.
Besmirch
To besmirch the reputation, name, honor, etc. of someone or something is to cause harm or damage to it.
// The allegations have besmirched the company's reputation.
Fortuitous
Fortuitous is a formal word that usually describes something that comes or happens by a lucky chance. It can also mean “happening by chance” and “fortunate, lucky.”
// The fact that we were both there was a fortuitous coincidence.
// You could not have arrived at a more fortuitous time.
Imbue
Imbue has two common meanings: "to permeate or influence as if by dyeing" and "to provide with something freely or naturally." In the second use it is usually used with with.
// A deep sense of history imbues the artist's work.
// The children were imbued with a passion for nature by their parents, both biologists.
Sartorial
Sartorial broadly means “of or relating to clothes,” but it often more specifically means “of or relating to a tailor or tailored clothes.”
// This particular English teacher is known both for engaging students deeply in literature and for her eccentric sartorial tastes.