"Dus" is a word of Dutch origin that means "twilight" or "dusk." In English, there are many synonyms that can be used interchangeably with "dus." Some of these include "nightfall," "sundown," "evening," and "dawn." These words all refer to the time of day when the sky begins to lose its light and darkness sets in, marking the end of the day or the beginning of the night. Other synonyms for "dus" might include "crepuscular," "twilighting," or "gloaming." Whatever word is used to describe it, the dusky hours of the day hold a special magic and beauty all their own.