There are various synonyms for the phrase "distinguishing characteristics" that can be used to describe unique qualities or characteristics that differentiate an individual, object or situation from others in a specific context. Some alternatives to this phrase include "identifying traits," "defining features," "distinct attributes," "unique aspects," "singular qualities," "peculiarities," "unmistakable markers" and "salient traits." These synonyms can come in handy in writing and communication as they allow for diversity in expression and help to avoid repetition. Therefore, it's essential to familiarize oneself with a versatile range of synonyms to enhance communication skills.