The word "weskit" has a few synonyms that can be used interchangeably. The most commonly used ones are "vest" and "waistcoat". Both words refer to a sleeveless garment, worn over a shirt, with buttons down the front. Some other words that can be used instead of "weskit" include "gilet", "jerkin", and "tank top". These words may have slightly different connotations or styles, but they all refer to a similar type of garment. When choosing a synonym for "weskit", it's important to consider the context and tone of your writing, as well as the specific audience you are addressing.