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I just removed Thor and Loki in The Avengers as an example because they're *not* blood relatives and therefore avoid this trope. I suppose you could make an argument for them if you say that this trope covers *all* relatives, adopted and otherwise, but I think the whole point of it is the privileging of *blood* relatives over everyone else.
For the record:
Does nobody think that the title of this trope is incredibly confusing until you see the context?
I vote for a better name.
Don't really HAVE a better name, but anything would be.
I don't think so. "Blood is thicker than water" is a moderately well known proverb.
I hate to be "That Guy", but I am: The stock phrase "Blood is thicker then water" is not the full phrase and means the complete opposite of the real phrase. The full phrase is "Blood of the covenant is thicker then water of the womb", implying that loyalties to friends are more important than blood ties. However, since this wiki is about how the phrase is used in popular culture, I'm not editing the main page, I'm tucking this here for anyone curious.
Where'd you read this?
The quote is from several sources, however John Lydgate's Troy Book c. 1492, is the first appearance of "The blood of the covenant is thicker than the water of the womb" in English.
Basically the actual quote is stating that an action, decision or promise made by choice is thicker than that of one forced by biology. Family is forced, friends and comrades are chosen.
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How well does it match the trope?