"Kindred spirit" is a term that describes the feeling of deep connection one has with another person who shares their beliefs, values, and interests. Although this phrase is used frequently, there are several synonyms for the term that can be used in its place. Some of these include "soul mate," "brother from another mother," "bosom buddy," "partner in crime," and "kindred soul." Each of these phrases captures the essence of what it means to have a strong and meaningful connection with another person, and can be used to describe a range of relationships, from romantic partners to close friends.