dour
"Dour" is an adjective with a strong, distinctive personality — it paints a picture of someone or something that is grim, stern, and not at all cheerful. It has two closely related senses that are worth knowing.
When you describe a person as dour, you mean they look or act very serious, cold, and hard to approach. They rarely smile, they don't make small talk, and they give off a 'don't bother me' kind of energy. Think of a strict, stone-faced guard who never cracks a smile — that's a dour person.
everyday language · Modern, but more common in literary or formal writing