Etymology and origin of the Old Norse word opinn
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1200 Icelandic Homily Book More words from the 12th century
- Inherited from
- Proto-Germanic *upanaz
- Ultimate origin
- Proto-Germanic *upanaz
Forms
opinn adj (neuter opit)[1]
Etymology
It is inherited from Proto-Germanic *upanaz (“open”),[2][3] the source also of Old English open, Old Frisian epen, Old Saxon opan and Old High German offan.[2][4] Orel takes it as made with the suffix of the strong past participle from the adverb Proto-Germanic *uppa (“up”),[2] and Wiktionary as the participle of a verb that is not on record.[5]
The first meaning was “turned upwards”: Ásgeir Blöndal Magnússon and Torp compare Latin supīnus (“lying on the back”), and relate the word to upp and op (“opening”).[6][7]
Earliest recorded meaning
IcePaHC has opnum in its text of the First Grammatical Treatise, which it dates to 1150, in the phonetic phrase opnum munni “with open mouth”.[8][9] The first dated manuscript record is in the Icelandic Homily Book of about 1200: vas þa leiþet opet en líc hans vas a bráuto “the grave was then open, and his body was gone”.[9]
Semantic evolution
ONP puts “lying on one's back” first: falla opinn “to fall backwards” and liggja opinn “to lie on one's back”.[9] From a shield seen from behind came koma í opna skjǫldu “to attack in the rear”.[10][11] The sense “open, not closed” gave opit bréf “letters patent” in the charters, “not frozen” of rivers, and in law, of land, “unfenced”.[9][12] Figuratively it meant “undecided” of a case and “evident” in the Edda.[13][14]
It continues as Icelandic opinn, Faroese opin, Norwegian Nynorsk open, Swedish öppen and Danish åben.[6][3]
Timeline
- 1200 – opet “open” in the Icelandic Homily Book.[9]
- 1225 – í opinni vǫk “in an open hole in the ice” in Ágrip.[9]
- 1237 – fell hann openn “he fell on his back”.[9]
- 1250 – buþir sinar opnar “their booths open” in Grágás.[9]
Meanings
Adjective
- lying on one's back, face upward.[9][13]
- turned with the inside out;[9][10] koma í opna skjǫldu to take in the rear.[9][10]
- open, not closed;[9][12] opit bréf an open letter, letters patent.[9][12]
- of water, not frozen.[9][15]
- undecided; evident, clear.[13][15]
Word family
- opna
- frostopinn
Descendants
Related words
- upp
- op
References
- ^ Faulkes, Anthony (2011), A New Introduction to Old Norse III: Glossary and Index of Names, 4th ed., London: Viking Society for Northern Research, p. s.v. opinn
- ^ a b c Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 435
- ^ a b c de Vries, Jan (1977), Altnordisches etymologisches Wörterbuch, 2nd ed., Leiden: Brill, p. 419
- ^ Holthausen, Ferdinand (1934), Altenglisches etymologisches Wörterbuch, Heidelberg: Carl Winter, p. 341
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f Ásgeir Blöndal Magnússon (1989), Íslensk orðsifjabók, Reykjavík: Orðabók Háskólans, ordsifjabok.arnastofnun.is, p. s.v. opinn
- ^ Torp, Alf (1909), Wortschatz der germanischen Spracheinheit (Fick, Vergleichendes Wörterbuch der indogermanischen Sprachen, 4th ed., vol. 3), Göttingen, p. 31
- ^ Wallenberg, Joel C.; Ingason, Anton Karl; Sigurðsson, Einar Freyr; Rögnvaldsson, Eiríkur, Icelandic Parsed Historical Corpus, version 0.9
- ^ a b c d e f g h i j k l m n Ordbog over det norrøne prosasprog / A Dictionary of Old Norse Prose, Copenhagen, onp.ku.dk (CC BY-SA 4.0), p. s.v. opinn
- ^ a b c Fritzner, Johan (1886–1896), Ordbog over det gamle norske Sprog, 2nd ed., Kristiania, p. s.v. opinn
- ^ Cleasby, Richard; Vigfússon, Guðbrandur (1874), An Icelandic-English Dictionary, Oxford: Clarendon Press, p. 466
- ^ a b c Hertzberg, Ebbe (1895), Glossarium, in Norges gamle Love indtil 1387, vol. 5, Christiania, p. 488
- ^ a b c Zoëga, Geir T. (1910), A Concise Dictionary of Old Icelandic, Oxford: Clarendon Press, p. s.v. opinn
- ^ Gering, Hugo (1915), Glossar zu den Liedern der Edda, 4th ed., Paderborn, p. 138
- ^ a b Baetke, Walter (1965–1968), Wörterbuch zur altnordischen Prosaliteratur, Berlin (digital ed. Greifswald 2006), p. 468
Related etymologies
Cite this entry
“Opinn.” Etymologically, 14 Nov. 2026, etymologically.com/non/opinn. Accessed 14 Nov. 2026.
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