The term "unworldly" refers to an individual who is inexperienced or lacking knowledge in worldly matters. Antonyms for "unworldly" include "worldly," "experienced," "sophisticated," "knowledgeable," "adroit," and "savvy." A worldly person is someone who is familiar with social norms, cultural trends, and is knowledgeable about worldly affairs. A sophisticated person is someone who is cultured and refined, while an experienced person has a great deal of practical knowledge. Adroit people are skilled or clever, while savvies are knowledgeable and well-informed. It's essential to use antonyms like these to articulate your thoughts properly and clearly, based on the tone and context of your writing.