There are several synonyms for the term "natural ability," including aptitude, talent, gift, knack, skill, expertise, proficiency, finesse, and dexterity. Each of these words conveys the idea of having an innate talent or skill in a specific area. Aptitude refers to a natural ability to learn or do something well. Talent and gift both suggest a natural ability that surpasses average ability. A knack suggests a natural talent for something specific. Skill, expertise, proficiency, finesse, and dexterity all suggest a high level of ability and mastery in a particular area, whether that's through natural ability or extensive practice.