Antonyms for "most well-expressed" include words such as poorly expressed, inarticulate, unintelligible, incoherent, muddled, confused, disjointed, garbled, unclear, and rambling. These words denote a lack of clarity, cohesion, and coherence in the expression of ideas. They imply a difficulty in communicating effectively and are often associated with a dearth of knowledge, limited vocabulary, or poor command of the language. On the other hand, antonyms for "most well-expressed" can be words such as poorly written, vague, ambiguous, unclear, inexact, uneven, cursory, choppy, or unpolished. These adjectives describe writing that lacks precision, organization, and finesse.