Another word for "highly skilled" is "proficient." This term conveys a high level of competence, expertise, or mastery in a particular area. Other synonyms include:

• Expert: Suggests deep knowledge and exceptional ability in a specific field.
• Adept: Implies natural skill or ease in performing tasks.
• Masterful: Indicates a commanding level of skill or artistry.
• Accomplished: Suggests a high degree of achievement and skill.
• Talented: Implies innate ability combined with developed skills.
• Seasoned: Refers to someone with extensive experience and refined skills.
• Polished: Suggests a high level of refinement and expertise.
• Versatile: Indicates adaptability and skill across multiple areas.
• Competent: Implies reliable and effective skill in a given domain.
• Gifted: Suggests exceptional natural ability combined with skill.

Each of these terms carries slightly different nuances, so the choice depends on the context and the specific qualities you want to emphasize. For example, "expert" might be used in a professional setting, while "gifted" might be more appropriate in creative or artistic contexts.