The phrase "know ropes" means to be knowledgeable or experienced in a particular field. Antonyms for this phrase include uninformed, inexperienced, and clueless. If someone doesn't "know ropes," they may be considered a novice, a newcomer, or a beginner. They may lack knowledge or understanding of a particular subject, and therefore struggle to navigate its intricacies or nuances. However, not knowing the ropes doesn't necessarily imply incompetence or ignorance. It simply means that someone is learning or adapting to new circumstances, and may need guidance or support from others who have more experience.