When we want to describe someone's proficiency in a particular skill or subject, we often use the phrase "good at." However, there are many synonyms for this phrase that can also be used to convey the same meaning. Some examples include skilled in, adept at, competent in, knowledgeable in, and proficient in. Other options include talented in, accomplished in, experienced in, and strong in. Depending on the context, various synonyms may be more appropriate than others. By expanding our vocabulary to include a variety of ways to describe someone's abilities, we can add depth and nuance to our language and communicate more effectively.