The antonyms for the word "more unadventurous" are "adventurous", "daring", "bold", "courageous", "reckless", "risque", "gutsy", "audacious", "brave", and "adventuresome". These words describe a person or situation that is willing to take risks, explore new frontiers, and embrace uncertainty. Unlike someone who is unadventurous, these individuals are curious, energetic and always looking for ways to challenge themselves. Being adventurous is a vital part of life, as it allows one to experience new things, grow and learn. So, if you want to break free from the chains of routine, embrace some of these antonyms, and step out of your comfort zone.