Pronunciation: [ˈadə] (IPA) 
The word "adder" is a noun that refers to a venomous snake found in Europe and Asia. It is spelled with two D's, although the second D is often silent in pronunciation. In IPA phonetic transcription, the word is represented as /ˈædər/. The first syllable is pronounced with the short A sound /æ/ as in "cat," followed by the schwa sound /ə/ in the second syllable. The final R is also typically silent.
An adder is a noun that refers to a venomous snake belonging to the viper family, specifically the subfamily Viperinae. Also known as the common European adder or the Vipera berus, it is the only venomous snake species found in the British Isles. The adder typically grows up to a length of 60-90 centimeters (24-35 inches) and has a distinctive dark zigzag pattern along its back, which provides excellent camouflage in grassy areas. This snake is found throughout Europe, from the Arctic Circle to the Himalayas, and it can survive in various habitats, including forests, moorlands, and grasslands.
The adder possesses a venomous bite used for subduing its prey, primarily consisting of small mammals, lizards, and birds. Although its venom is potent, adder bites are rarely fatal to humans unless left untreated or an individual possesses a severe allergic reaction. The venomous bite typically causes pain, swelling, and discoloration around the area. Additionally, adders are known for their ability to hibernate, with individuals typically seeking shelter in underground burrows during the colder months.
Due to its venomous nature, the adder is often subject to fear and misunderstanding. However, it plays a crucial role in maintaining the balance of ecosystems by controlling populations of small mammals and acting as a food source for larger predators. Overall, the adder is a fascinating and ecologically significant creature that contributes to the biodiversity of its native habitats.
A poisonous serpent; a viper.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "adder" has origins in Old English, where it was spelled "næddre". This term was derived from the Proto-Germanic word "nadrǭ", which meant "snake". The word eventually evolved in Middle English to "adre", and finally, in Modern English, to "adder". The term has remained relatively unchanged in its meaning throughout its history, referring to a venomous serpent, specifically the common European viper (Vipera berus).
