Blood Is Thicker Than Water
“Blood is thicker than water” means family ties are considered stronger than relationships with outsiders. The English proverb is documented by 1737, and Walter Scott used “blude’s thicker than water” in Guy Mannering (1815). The modern “blood of the covenant” reversal is not an older original form.
It means family bonds are treated as especially strong. Phrase Finder reports the English proverb in Allan Ramsay’s 1737 Scots proverbs, while the 1815 Scott wording is directly inspectable. The popular “blood of the covenant is thicker than the water of the womb” reversal has no demonstrated historical basis as the original saying.
Key details
What the evidence supports
The English proverb is documented by 1737.
Phrase Finder reports Allan Ramsay’s 1737 Scots proverb “Blude’s thicker than water.”
Walter Scott used the proverb in Guy Mannering in 1815.
The Project Gutenberg text directly contains “Weel, blude’s thicker than water.”
“The blood of the covenant is thicker than the water of the womb” is the ancient/original form.
The reviewed history dates the familiar family proverb centuries earlier and says the reversal was popularized only in the late twentieth/early twenty-first century without an older source.
Documented timeline
- 1737
English proverb reported
Phrase Finder reports Allan Ramsay’s Collected Scots Proverbs containing “Blude’s thicker than water.”
- 1815
Scott use directly inspected
Guy Mannering contains the wording “Weel, blude’s thicker than water.”
Variants
Current Cambridge form.
Scots wording reported in 1737 and directly present in Scott’s 1815 novel.
Meaning over time
Family bonds prioritized
The proverb expresses the belief that family ties are stronger/more important than outsider relationships.
Further guidance
Chronology
Phrase Finder reports “Blude’s thicker than water” in Allan Ramsay’s 1737 collection; Project Gutenberg’s Guy Mannering directly preserves Scott’s 1815 “Weel, blude’s thicker than water” wording.
Meaning
Cambridge says the proverb emphasizes a belief that family connections are more important than other relationships.
Modern Reversal
The “blood of the covenant … water of the womb” reversal is a modern reinterpretation, not established as the older/original proverb in the reviewed evidence.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Blood Is Thicker Than Water — meaning (opens in a new tab)Cambridge University Press · Current proverb meaning
- Blood Is Thicker Than Water — Meaning & Origin (opens in a new tab)Phrase Finder · English chronology and modern reversal-myth analysis
- Guy Mannering; or, The Astrologer — Complete (opens in a new tab)Project Gutenberg · Directly inspected 1815 Scott text containing “blude’s thicker than water”