In Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

, Níðhöggr (Malice Striker, often anglicized

Old Norse orthography

The orthography of the Old Norse language was diverse, being written in both Runic and Latin alphabets, with many spelling conventions, variant letterforms, and unique letters and signs. In modern times, scholars established a standardized spelling for the language. When Old Norse names are used in...

 Nidhogg) is a dragon

Norse dragon

In Norse mythology there are several references to dragons.* In the Völuspá the being Níðhöggr is identified as a dragon * The Midgard Serpent is described as a giant, venomous serpent...

 who gnaws at a root of the World Tree

World tree

The world tree is a motif present in several religions and mythologies, particularly Indo-European religions, Siberian religions, and Native American religions. The world tree is represented as a colossal tree which supports the heavens, thereby connecting the heavens, the earth, and, through its...

, Yggdrasill.

Prose Edda

According to the Gylfaginning

Gylfaginning

Gylfaginning, or the Tricking of Gylfi , is the first part of Snorri Sturluson's Prose Edda after Prologue. The Gylfaginning deals with the creation and destruction of the world of the Norse gods, and many other aspects of Norse mythology...

part of Snorri Sturluson

Snorri Sturluson

Snorri Sturluson was an Icelandic historian, poet, and politician. He was twice elected lawspeaker at the Icelandic parliament, the Althing...

's Prose Edda

Prose Edda

The Prose Edda, also known as the Younger Edda, Snorri's Edda or simply Edda, is an Icelandic collection of four sections interspersed with excerpts from earlier skaldic and Eddic poetry containing tales from Nordic mythology...

, Níðhöggr or "Nidhogg Nagar" is a being which gnaws one of the three roots of Yggdrasill. It is sometimes believed that the roots are trapping the beast from the world. This root is placed over Niflheimr and Níðhöggr gnaws it from beneath. The same source also says that "[t]he squirrel called Ratatöskr runs up and down the length of the Ash, bearing envious words between the eagle and Nídhöggr."

In the Skáldskaparmál

Skáldskaparmál

The second part of Snorri Sturluson's Prose Edda the Skáldskaparmál or "language of poetry" is effectively a dialogue between the Norse god of the sea, Ægir and Bragi, the god of poetry, in which both Norse mythology and discourse on the nature of poetry are intertwined...

section of the Prose Edda Snorri specifies Níðhöggr as a serpent in a list of names of such creatures:

These are names for serpents: dragon, Fafnir, Iormungand, adder, Nidhogg, snake, viper, Goin, Moin, Grafvitnir, Grabak, Ofnir, Svafnir, masked one. (Faulkes translation, p.137)

Snorri's knowledge of Níðhöggr seems to come from two of the Eddic poems: Grímnismál

Grímnismál

Grímnismál is one of the mythological poems of the Poetic Edda. It is preserved in the Codex Regius manuscript and the AM 748 I 4to fragment. It is spoken through the voice of Grímnir, one of the many guises of the god Odin, who is tortured by King Geirröth...

and Völuspá

Völuspá

Völuspá is the first and best known poem of the Poetic Edda. It tells the story of the creation of the world and its coming end related by a völva addressing Odin...

.

Later in Skáldskaparmál, Snorri includes Níðhöggr in a list of various terms and names for swords.

Poetic Edda

The poem Grímnismál identifies a number of beings which live in Yggdrasill. The tree suffers great hardship from all the creatures which live on it. The poem identifies Níðhöggr as tearing at the tree from beneath and also mentions Ratatoskr as carrying messages between Níðhöggr and the eagle who lives at the top of the tree. Snorri Sturluson often quotes Grímnismál and clearly used it as his source for this information.

The poem Völuspá mentions Níðhöggr twice. The first instance is in its description of Náströnd

Náströnd

In Norse mythology, Náströnd is a place in Hel where Níðhöggr lives and sucks corpses.-Poetic Edda:The Völuspá says:-Prose Edda:...

.

Eysteinn Björnsson's edition	Bellows' translation	Dronke Ursula Dronke Ursula Dronke is a medievalist and former Reader in Old Norse at the University of Oxford. She is the Emeritus Vigfússon Reader in Ancient Icelandic Literature and Antiquities and an Emeritus Fellow of Linacre College. She also formerly taught in the Faculty of Modern and Medieval Languages at... 's translation
Sal sá hon standa sólu fjarri Náströndu á, norðr horfa dyrr. Fellu eitrdropar inn um ljóra, sá er undinn salr orma hryggjum. Sá hon þar vaða þunga strauma menn meinsvara ok morðvarga ok þanns annars glepr eyrarúnu. Þar saug Niðhöggr nái framgengna, sleit vargr vera - vituð ér enn, eða hvat ?	A hall I saw, far from the sun, On Nastrond it stands, and the doors face north, Venom drops through the smoke-vent down, For around the walls do serpents wind. I there saw wading through rivers wild treacherous men and murderers too, And workers of ill with the wives of men; There Nithhogg sucked the blood of the slain, And the wolf tore men; would you know yet more?	A hall she saw standing remote from the sun on Dead Body Shore. Its door looks north. There fell drops of venom in through the roof vent. That hall is woven of serpents' spines. She saw there wading onerous streams men perjured and wolfish murderers and the one who seduces another's close-trusted wife. There Malice Striker sucked corpses of the dead, the wolf tore men. Do you still seek to know? And what?

Níðhöggr is also mentioned at the end of Völuspá, where he is identified as a dragon and a serpent.

Eysteinn Björnsson's edition	Bellows' translation	Dronke's translation
Þar kømr inn dimmi dreki fljúgandi, naðr fránn, neðan frá Niðafjöllum. Berr sér í fjöðrum - flýgr völl yfir - Níðhöggr nái - nú mun hon søkkvask.	From below the dragon dark comes forth, Nithhogg flying from Nithafjoll; The bodies of men on his wings he bears, The serpent bright: but now must I sink.	There comes the shadowy dragon flying, glittering serpent, up from Dark of the Moon Hills. He carries in his pinions —he flies over the field— Malice Striker, corpses. Now will she sink.

The context and meaning of this stanza is disputed. The most prevalent opinion is that the arrival of Níðhöggr heralds Ragnarök

Ragnarök

In Norse mythology, Ragnarök is a series of future events, including a great battle foretold to ultimately result in the death of a number of major figures , the occurrence of various natural disasters, and the subsequent submersion of the world in water...

 and thus that the poem ends on a tone of ominous warning.

Níðhöggr is not mentioned elsewhere in any ancient source.

Níðhöggr's name

In the standardized Old Norse orthography

Orthography

The orthography of a language specifies a standardized way of using a specific writing system to write the language. Where more than one writing system is used for a language, for example Kurdish, Uyghur, Serbian or Inuktitut, there can be more than one orthography...

 the name is spelled or but the letter '' is frequently replaced with the Modern Icelandic 'ö' for reasons of familiarity or technical expediency.

The name can be represented in English texts

Old Norse orthography

The orthography of the Old Norse language was diverse, being written in both Runic and Latin alphabets, with many spelling conventions, variant letterforms, and unique letters and signs. In modern times, scholars established a standardized spelling for the language. When Old Norse names are used in...

 as Nidhogg, Nidhoggr, Nithhogg, Nidhögg, Nidhöggr, Nithhöggr, Nídhöggr, Nithhoggr, Nidhhogg, Níðhögg, Niðhoggr, Níðhoggr, Nídhögg, Hidhaegg, or Nidhhoggr. The Modern Icelandic

Icelandic language

Icelandic is a North Germanic language, the main language of Iceland. Its closest relative is Faroese.Icelandic is an Indo-European language belonging to the North Germanic or Nordic branch of the Germanic languages. Historically, it was the westernmost of the Indo-European languages prior to the...

 forms Níðhöggur and Niðhöggur are also sometimes seen and anglicized as Nidhoggur. The Danish

Danish language

Danish is a North Germanic language spoken by around six million people, principally in the country of Denmark. It is also spoken by 50,000 Germans of Danish ethnicity in the northern parts of Schleswig-Holstein, Germany, where it holds the status of minority language...

form Nidhug or "Nidhøg" can also be encountered.