Which term means 'not clearly expressed'?

The term that means 'not clearly expressed' is indeed the one that implies a lack of clarity or precision in communication. The key part of this term is the prefix "in-" which indicates negation or the opposite of the base word, indicating that something is not expressed in a clear or explicit manner. In this context, "inexplicitly" suggests that something is vague, ambiguous, or lacking definitive expression, which aligns perfectly with the definition of 'not clearly expressed'.

Other options, on the other hand, provide meanings that are contrary to this term. "Explicitly" indicates that something is stated clearly and in detail, leaving no room for confusion. "Clearly" also conveys the opposite meaning, as it pertains to being easily understood or transparent. "Articulately" suggests expressing ideas fluently and coherently, which again implies clarity in expression.