The meaning of blood is thicker than water is that relationships and loyalties within a family are the strongest and most important ones. This proverb is used to say that someone’s family is more important than anyone else, and that a person will always support their relatives over anyone else.
The origin of this proverb can be traced back to the 12th century in German, where it appeared in a different form in a medieval beast epic called Reinhart Fuchs. The proverb entered English in the 15th century, and was used by several Scottish and Irish authors in the 18th and 19th centuries. The proverb has been used in various contexts, such as politics, war, and literature.
