English Words Starting With O

• oglala

  nounVery Low
  /ɒˈɡlɑːlə/A member of a Native American people, part of the Lakota Sioux nation, traditionally residing in the North American Plains, particularly in present-day South Dakota.
• ogle

  nounverbverb-intransitiveverb-transitiveC2
  /ˈəʊɡ(ə)l/to look at someone in a desirous, lecherous, or prolonged way, typically in a manner that makes them feel uncomfortable.
• oglethorpe

  nounVery Low
  /ˈɒɡ.əl.θɔːp/A proper noun, primarily a surname of English origin, historically associated with General James Oglethorpe, founder of the colony of Georgia (U.S.).
• ogma

  nounExtremely Low
  /ˈɒɡmə/A reference to the name of the Irish god of eloquence and language, primarily found in proper names, mythology, or specialized cultural contexts.
• ogmios

  nounVery Rare
  /ˈɒɡmiɒs/A reconstructed Celtic deity, often identified as a god of eloquence, persuasion, and possibly travel or roads, analogous to the Roman god Mercury or the Greek god Hermes.
• ogonek

  nounC2
  /əʊˈɡɒnɛk/A small, hook-like diacritic mark placed beneath a letter, used primarily to indicate nasalisation of vowels in certain languages, especially Polish and Lithuanian.
• ogooue

  nounVery Rare (Geographical Proper Noun)
  /ˌɒɡəʊˈweɪ/The Ogooue River, a major river in west-central Africa, primarily flowing through Gabon.
• ogopogo

  nounC1
  /ˌəʊɡəʊˈpəʊɡəʊ/A mythical lake monster reputed to inhabit Okanagan Lake in British Columbia, Canada; a Canadian cryptid often compared to the Loch Ness Monster.
• ogpu

  nounC2
  /ˌəʊdʒiːpiːˈjuː/A historical Soviet secret police organization and precursor to the KGB, active from 1922–1934.
• ogre

  nounC1
  /ˈəʊɡə(r)/A monstrous, cruel, and man-eating giant in folklore and fairy tales.
• ogress

  nounRare
  /ˈəʊɡrɛs/a female ogre; a monstrous, cruel, or hideous woman.
• ogun

  nounLow/Very Low
  /ˈəʊ.ɡʊn/A state in southwestern Nigeria, its capital is Abeokuta.
• oh

  interjectionnounverb-intransitiveA1
  /əʊ/An interjection used to express a range of emotions or reactions, most commonly surprise, sudden realization, or pain.
• ohia lehua

  nounVery Low
  /əʊˌhiːə ˈleɪ.huː.ə/A native Hawaiian tree (Metrosideros polymorpha) known for its vibrant, tufted red flowers.
• ohio

  nounB1
  /əʊˈhaɪəʊ/A state in the Midwestern region of the United States of America.
• ohio buckeye

  nounLow
  /əʊˌhaɪ.əʊ ˈbʌk.aɪ/A specific tree species (Aesculus glabra) native to the Midwestern United States, particularly associated with the state of Ohio, or its inedible nut.
• ohlenschlager

  nounExtremely Rare / Non-Existent
  /ˈəʊlənˌʃleɪɡə/ (hypothetical, based on anglicised spelling pronunciation)A non-existent, fabricated or extremely rare word often used as a placeholder or example in lexicographic or linguistic discussions. It is not part of standard English vocabulary.
• ohlin

  nounRare
  /ˈəʊlɪn/A surname of Scandinavian origin, most famously associated with Swedish economist Bertil Ohlin.
• ohm

  nounC2
  /əʊm/A unit of electrical resistance in the International System of Units (SI).
• ohm's law

  nounLow (Common in technical contexts, rare in general discourse)
  /ˈəʊmz ˌlɔː/A fundamental law of electrical circuits stating that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them, given by the formula I = V/R.

Showing 661–680 of 3187 words.