Words Beginning with O: A Comprehensive List of Words

Looking for words that start with the letter "O"? This extensive list delves into the realm of words beginning with "O," exploring their diverse meanings, origins, and uses. From common everyday terms to specialized vocabulary, this collection covers a wide range of words, offering a valuable resource for expanding your vocabulary and understanding the nuances of the English language.
1. **Oasis:** A fertile spot in a desert, often with water and vegetation.
2. **Obedient:** Willing to follow orders or instructions.
3. **Object:** A thing that can be seen and touched; a material thing.
4. **Obscure:** Not clearly seen or understood; hidden from view.
5. **Obtain:** To get or acquire something.
6. **Obvious:** Easily seen or understood; clear.
7. **Occasion:** A special event or time; a reason for celebration.
8. **Occupy:** To live in or use a place; to fill a space.
9. **Occur:** To happen or take place; to come to pass.
10. **Ocean:** A vast body of salt water covering much of the Earth.
11. **Odd:** Strange or unusual; not even.
12. **Offer:** To present something for acceptance; to propose.
13. **Office:** A place of work; a position of authority.
14. **Often:** Many times; frequently.
15. **Oil:** A thick, flammable liquid found underground.
16. **Old:** Having lived or existed for a long time.
17. **Olive:** A small, oval-shaped fruit with a bitter taste.
18. **Omit:** To leave something out; to exclude.
19. **Once:** One time; formerly.
20. **Open:** Not closed; accessible.
21. **Opera:** A dramatic work of art performed with music and singing.
22. **Opinion:** A belief or judgment about something.
23. **Opportunity:** A chance to do something; a favorable situation.
24. **Oppose:** To be against something; to disagree.
25. **Opposite:** Completely different; located at the other end.
26. **Orange:** A citrus fruit with a bright orange color.
27. **Order:** A command or instruction; a sequence.
28. **Ordinary:** Normal; not special.
29. **Organize:** To arrange things in a systematic way.
30. **Origin:** The beginning or source of something.
31. **Orphan:** A child who has lost both parents.
32. **Other:** Not the same; different.
33. **Outcome:** The result of an event or process.
34. **Outdoor:** Outside a building or house.
35. **Outrageous:** Shocking or offensive; extremely bad.
36. **Overcome:** To defeat or conquer something.
37. **Overlook:** To fail to notice something; to ignore.
38. **Own:** To have something as one's property.
39. **Ox:** A male cow, usually castrated.
40. **Oxygen:** A colorless, odorless gas essential for life.
41. **Oyster:** A type of mollusk with a hard shell.
42. **Ozone:** A gas that protects the Earth from harmful radiation.
43. **Overall:** As a whole; in general.
44. **Overwhelm:** To defeat or overcome someone completely.
45. **Owe:** To be indebted to someone; to have a duty.
46. **Owl:** A nocturnal bird of prey with large eyes.
47. **Owner:** A person who owns something.
48. **Oxen:** Plural of ox.
49. **Outbreak:** A sudden increase in the number of cases of a disease.
50. **Overjoyed:** Feeling great happiness.
51. **Overseas:** In or to a foreign country.
52. **Overtime:** Working beyond normal hours.
53. **Overturn:** To turn something upside down.
54. **Overweight:** Weighing more than is considered healthy.
55. **Overflow:** To become too full.
56. **Override:** To take precedence over something else.
57. **Overpass:** A bridge that carries a road over another road or obstacle.
58. **Overture:** An introductory musical piece or act.
59. **Outfit:** A set of clothes.
60. **Outlandish:** Strange and unusual; extravagant.
61. **Outgoing:** Friendly and sociable; extroverted.
62. **Outlast:** To last longer than something else.
63. **Outlier:** A value that is significantly different from other values in a set.
64. **Outreach:** The act of reaching out to people or groups.
65. **Outsmart:** To be cleverer than someone else.
66. **Outspoken:** Expressing one's opinions frankly.
67. **Outstanding:** Excellent; exceptional.
68. **Outlook:** A person's point of view; a prospect.
69. **Outright:** Completely; absolutely.
70. **Outset:** The beginning of something.
71. **Oust:** To force someone out of a position.
72. **Outwit:** To be more clever than someone else.
73. **Ounce:** A unit of weight equal to 1/16 of a pound.
74. **Oustanding:** Excellent; exceptional.
75. **Outward:** Toward the outside; external.
76. **Ovary:** The female reproductive organ that produces eggs.
77. **Overcast:** Cloudy; covered with clouds.
78. **Overcome:** To defeat or conquer something.
79. **Overdue:** Past the due date; late.
80. **Overhear:** To hear something unintentionally.
81. **Overjoyed:** Feeling great happiness.
82. **Overlook:** To fail to notice something; to ignore.
83. **Overreact:** To respond in an exaggerated way.
84. **Overrun:** To spread over or occupy a place in large numbers.
85. **Oversee:** To supervise or manage something.
86. **Overt:** Open and obvious; not hidden.
87. **Overthink:** To worry or analyze something too much.
88. **Overtone:** A subtle or implied meaning.
89. **Overture:** An introductory musical piece or act.
90. **Overwhelm:** To defeat or overcome someone completely.
91. **Owe:** To be indebted to someone; to have a duty.
92. **Own:** To have something as one's property.
93. **Ox:** A male cow, usually castrated.
94. **Oxygen:** A colorless, odorless gas essential for life.
95. **Oyster:** A type of mollusk with a hard shell.
96. **Ozone:** A gas that protects the Earth from harmful radiation.