The word "un-distinct" refers to something that is not clearly defined or easily distinguishable. Some synonyms for this word include ambiguous, uncertain, vague, nebulous, unclear, indefinite, and hazy. These words suggest a lack of clarity or precision, making it difficult to identify or characterize the subject in question. Other possibilities include blurry, indistinct, imprecise, muddled, and fuzzy. These terms can also be used to describe something that is difficult to discern or perceive, whether due to a lack of detail, context, or information. Overall, these synonyms all reflect a sense of uncertainty or indeterminacy, making it challenging to define or identify the object or idea in question.