The word "muckers" is a slang term that is commonly used to describe people who are involved in manual or labor-intensive work. There are several different synonyms for the word, including laborers, workers, handymen, and tradespeople. Other similar terms that may be used to describe these individuals include blue-collar workers, mechanics, construction workers, and maintenance workers. Depending on the context, the term "muckers" may be used in a positive or negative light, and may be used to describe individuals who work hard, or those who are seen as being unskilled or less educated. Ultimately, the synonym that best fits the situation will depend on the specific context and the intended meaning.