The antonyms for the phrase "more unproficient" would be "highly skilled," "competent," or "proficient." These words indicate that a person or thing has the necessary knowledge, experience, or training to perform a specific task or duty effectively. In contrast, the opposite of "more unproficient" is "more proficient," indicating that a person or thing has developed a high degree of expertise in a particular field or subject matter. Employers typically seek out highly proficient candidates when hiring, as they can handle more complex responsibilities and contribute to overall organizational success. Therefore, individuals looking to improve their job prospects should focus on developing their proficiency in their respective fields.