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Britain's only venomous snake, too shy to bother anyone who isn't barefoot and unlucky.

means A small venomous snake (a viper), most famously the only poisonous snake native to Britain.

from A wonderful accident of mishearing. In Old English the word was 'nædre,' meaning serpent — related to other Germanic snake-words and a distant cousin of words across the old languages. Over time 'a nadder' was misheard as 'an adder,' and the snake quietly lost its initial N to the word in front of it. The same slippery process happened in reverse elsewhere, gifting English an 'a newt' that was once 'an ewt,' and a 'nickname' that began as 'an eke-name.'

bite stats
Last UK death was over 20 years ago
zigzag mark
Dark diamond stripe runs down its spine
cold blood
Hibernates in groups through British winters
live birth
Bears young instead of laying eggs
namesake
Old machines and math operations stole the name
for instance

vipera berus — venomous snake found across europe, only venomous snake in britain

puff adder — bitis arietans, deadly african viper responsible for more human deaths than any other snake

death adder — acanthophis, australian snake with neurotoxic venom and fastest strike of any venomous snake

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