When writing or speaking about something that is unique or individual, the phrase "in the singular" is often used to convey this idea. However, there are a number of synonyms that can be used to express the same idea. For example, phrases such as "one-of-a-kind," "singularly unique," "unmatched," or "individual" can all be used to describe something that is one of a kind. Likewise, words such as "distinctive," "unique," "peculiar," and "special" all convey the idea of something that is singular or exceptional. Therefore, when seeking to describe something that is completely unique or individual, there are a range of different words and phrases that can be used to convey this concept.