1. most difficult to understand or see clearly; most confusing or vague
Usage: superlative form of unclear

Examples

• The unclearest part of the instructions caused the most confusion.
• His handwriting was unclearest in the final paragraph.
• The unclearest explanation came from the newest teacher.
• This is the unclearest photo in the entire collection.
• The contract’s unclearest clause led to the dispute.
• Her unclearest statement was about the deadline.