Competent, capable, proficient, skilled, talented, accomplished, expert, adept, efficient, good, accomplished, effective, qualified, reliable, impressive, seasoned, trained, well-prepared, experienced, intelligent, capable. These are the antonyms for the word "was incompetent." To describe someone as incompetent is to suggest that they lack the skills, knowledge, or ability needed to perform a task or job properly. Using antonyms such as competent, proficient, or skilled can describe someone who is highly capable and has the necessary skills to produce effective and efficient results. These antonyms can help you provide a full picture of an individual's abilities and qualifications.