When someone has qualms, it means that they are hesitant or uneasy about something, often due to ethical or moral concerns. Therefore, antonyms for this phrase would be words that indicate confidence, approval or willingness to proceed with a decision or action. Some possible antonyms for "has qualms" include "is decisive," "is indifferent," "is enthusiastic," "is assertive," "is certain," and "is resolute." When a person lacks qualms, they can more easily move forward with their plans, free from doubts or hesitations. It's important to consider different perspectives before making decisions, but sometimes it's necessary to act without qualms to achieve our goals.