Icelandic Language, language of the people of Iceland. Icelandic is a member of the North Germanic (Scandinavian) branch of the Germanic languages, a subfamily of the Indo-European languages. It is derived from Old Norse, the language of the Vikings who came to Iceland from Norway in the 9th century ad. From 1380 to 1918 Iceland was ruled by Denmark; despite this, Icelandic remained virtually uninfluenced, its purity of form assured by geographic isolation and a strong literary tradition. Even today Icelandic differs little from Old Norse, and modern readers can easily read the medieval Eddas and sagas (see Icelandic Literature).
The Roman alphabet was introduced with Christianity about the year 1000, but the older ð (eth, or voiced th) and þ (thorn, or unvoiced th) were retained, as were æ and ö. The vowels may also take acute accents: á, é, í, ó, ú, and ý. Modern Icelandic, which is considered to date from 1540, when the New Testament was translated, is still heavily inflected, unlike the other Scandinavian languages. Icelandic has three genders and four cases of nouns, pronouns, and adjectives; verbs have three persons. The language is equally purist in vocabulary. Linguistic policy formulated in the 18th century generally prevents assimilation of foreign words, so that instead of international scientific and technological terms being adopted, for example, compounds of native Icelandic words are formed; in addition, old words are revived and new ones are created, based on native roots.