"Know how" refers to a person's ability and familiarity with a particular skill or subject. Synonyms for "know how" include expertise, proficiency, mastery, competence, adeptness, and skillfulness. These words are commonly used to describe individuals who possess a high level of knowledge and ability in a specific field. Other words that are similar in meaning to "know how" include technical proficiency, practical know-how, experience, knowledge, and acumen. Using synonyms in communication can help individuals express themselves in a more varied and dynamic way, accurately portraying their level of competence and skill in any given area.