English Words Starting With O

• ostrich

  nounB2
  /ˈɒs.trɪtʃ/A large, flightless bird native to Africa, with a long neck and legs, the largest living bird species.
• ostrich fern

  nounLow
  /ˈɒs.trɪtʃ fɜːn/A tall, deciduous fern native to temperate regions, scientifically known as Matteuccia struthiopteris, known for its large, feathery, ostrich-plume-like fronds that form a vase-shaped crown.
• ostrogoth

  nounVery Low
  /ˈɒstrəɡɒθ/A member of an East Germanic tribe that established a kingdom in Italy in the 5th-6th centuries AD.
• ostrovsky

  nounVery Low
  /ɒˈstrɒfski/A proper noun, typically referring to a person's surname of Russian origin, most notably associated with the 19th-century Russian playwright Alexander Ostrovsky.
• ostwald

  nounVery Low
  /ˈɒstvalt/A proper noun, primarily a surname of German origin, most famously associated with the Nobel Prize-winning chemist Wilhelm Ostwald.
• ostyak

  nounRare
  /ˈɒstɪæk/A member of an indigenous people of Western Siberia, now more commonly referred to as the Khanty people.
• osun

  nounLow/Very Low (primarily encountered in cultural, religious, or academic contexts)
  /ˈɒʃʊn/ (approximation for Oshun/Osun)A mythical or lesser-known entity; historically an alternative spelling for 'Oshun', the Yoruba deity of rivers, love, and fertility.
• oswald

  nounLow (as a common noun, it is non-existent)
  /ˈɒz.wəld/A male given name of Old English origin.
• oswego

  nounC2 (Very Low Frequency - Specialized)
  /ɒzˈwiːɡəʊ/A specific variety of aromatic plant (Monarda didyma), also known as bee balm or bergamot, native to North America, particularly associated with the Oswego River region in New York.
• oswego tea

  nounC1-C2
  /ɒzˈwiːɡəʊ tiː/A common name for the plant Monarda didyma, a North American herb of the mint family with aromatic leaves and red flowers.
• oswiecim

  nounC1
  /ɒʃˈvjɛn(t)ʃɪm/The Polish name for the town in southern Poland, internationally known as the site of the Auschwitz concentration and extermination camp during WWII.
• otago

  nounlow
  /əʊˈtɑːɡəʊ/proper noun referring to a region on the South Island of New Zealand
• otaheite apple

  nounLow/Very Low
  /ˌəʊtəˌhiːti ˈæp(ə)l/The fruit of the Malay apple tree (Syzygium malaccense), a tropical fruit with a pear-like shape and crisp, mildly sweet, juicy flesh, often red or pinkish in colour.
• otaheite orange

  nounVery low
  /ˌəʊtəˌhiːti ˈɒrɪndʒ/An alternative name for the Tahitian or Persian lime (Citrus × latifolia), a seedless, greenish-yellow citrus fruit.
• otaku

  nounmedium
  /əʊˈtɑːkuː/A person with an obsessive or intense interest in a particular hobby, especially anime, manga, or video games.
• otalgia

  nounVery Low
  /əʊˈtældʒə/Pain in the ear; earache.
• otaru

  nounVery Low
  /əʊˈtɑːruː/The proper noun for a port city in Hokkaido, Japan, known for its historic canal district.
• otello

  nounLow
  /əˈθɛləʊ/Proper noun: the title character of William Shakespeare's tragedy 'Othello, the Moor of Venice', a respected Moorish general in the Venetian army who is manipulated by his ensign Iago into murdering his wife Desdemona out of jealous rage.
• othello

  nounC1/C2
  /əʊˈθɛləʊ/The titular character from William Shakespeare's tragedy 'Othello, the Moor of Venice'.
• other

  adjectiveadverbdeterminernounpronounverb-transitiveA1
  /ˈʌðə(r)/A distinct or alternative person, thing, or category from the one already mentioned or known; the second of two or the remaining one(s).

Showing 2281–2300 of 3187 words.