The antonyms for the word "more tightlaced" include "relaxed," "casual," "informal," "easygoing," "laid-back," and "liberal." These words describe a personality or a lifestyle that is not bound by strict social norms or conventions. A relaxed individual is typically easy to talk to and comfortable with themselves and those around them. Casual and informal refer to a style that is uncomplicated, easy to wear, and comfortable, making it suitable for daily wear. Such individuals are also easygoing and do not take things too seriously. In contrast, a tightlaced individual is often rigid, moralistic, and uncompromising, which can be a hindrance to their social interactions.