There are many different synonyms that can be used to describe a farm boy. Some of the most common options include words like agricultural worker, farmer's son, rancher's apprentice, and rural laborer. Other possibilities might include terms like countryside young man, agricultural laborer, or rural farmhand. The specific synonym that is chosen will depend on the tone and context of the writing, as well as the author's intended meaning. Regardless of which term is selected, all of these words can help to evoke a sense of hard work, dedication, and rural life that is often associated with farm boys and their families.