ó-

From Old Norse ó-, ú-, from Proto-Germanic *un-, from Proto-Indo-European *n̥-, a prefix use of the particle *ne (“not”). In Faroese this changed very early from ú- to ó-.

Cognate with Old English un- (English un-), Old Saxon un-, Dutch on-, Old High German un- (German un-), Swedish o-, Norwegian u, and Gothic 𐌿𐌽- (un-). The Indo-European root is also the source of Ancient Greek ἀ- (a-), ἀν- (an-), Latin in-, and Old Irish in-.

ó-

1. un-

From Old Norse ó-, ú-, from Proto-Germanic *un-, from Proto-Indo-European *n̥-, a prefix use of the particle *ne (“not”). In Icelandic this changed very early from ú- to ó-.

Cognate with Old English un- (English un-), Old Saxon un-, Dutch on-, Old High German un- (German un-), Swedish o-, Norwegian u, and Gothic 𐌿𐌽- (un-). The Indo-European root is also the source of Ancient Greek ἀ- (a-), ἀν- (an-), Latin in-, and Old Irish in-.

ó-

1. un-, non-, in-

   ‎ó- + ‎friður (“peace”) → ‎ófriður (“war”)

   ‎ó- + ‎heppni (“luck”) → ‎óheppni (“bad luck”)

   ‎ó- + ‎þekkur (“well-behaved”) → ‎óþekkur (“naughty”)

   ‎ó- + ‎happ (“a stroke of luck”) → ‎óhapp (“accident”)

   ‎ó- + ‎samlína (“collinear”) → ‎ósamlína (“noncollinear”)

• óendanlegur (“endless, infinite”)
• óbundinn
• óheppni
• óhittni

• ú-