Without design is a phrase used to describe something that is done unintentionally or without purpose. There are several synonyms for without design, including inadvertently, accidentally, unintentionally, unknowingly, and unconsciously. These words all indicate that there was no intention behind the action, and it happened without planning or thought. Using synonyms for without design can help add variety to writing, and can make the text more interesting and engaging for the reader. It is important to choose the right synonym based on context to ensure that the meaning of the sentence is clear and accurate.