The word "are skillful" implies a high level of competence or expertise in a particular area. Antonyms for this phrase could include words like unskilled, incompetent, inept, clumsy, or inexperienced. These terms suggest a lack of ability or proficiency, which is the opposite of being skillful. Sometimes, a lack of skillfulness can be due to a lack of training or practice, while other times it may be a result of inherent limitations. It is important to recognize that everyone has different strengths and weaknesses, and being "unskilled" in one area does not necessarily mean that a person lacks talent or potential in other areas.