"More left field" is a phrase used to describe something that is unexpected or unconventional. Some antonyms for this phrase include typical, conventional, traditional, ordinary, and mainstream. These adjectives describe something that is within the norms and standards of society, something that is predictable and commonplace. When something is more left field, it stands out and is often seen as peculiar or eccentric. Conversely, when something is typical or conventional, it is not particularly noticeable or different from what is expected. Therefore, the antonyms for "more left field" describe things that are familiar and conform to the standards of the norm.