When you want to describe something as vague, unclear or indistinct, the word "hazy" could come to mind. However, there are many other synonyms for this word that could help you improve your writing style. Words such as foggy, misty, unclear, cloudy, murky, opaque and shadowy, all describe something that is not clearly visible or understood. You could also consider using the words ambiguous, equivocal, or dubious, if you want to suggest that something is not straightforward or is open to interpretation. Whatever word you choose, remember to use it within the appropriate context to ensure that your communication is clear and concise.