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English words and phrases beginning with O

May include AI-generated content. Most words have not yet been reviewed by a native speaker.

This page lists the 11 words and 5 phrases beginning with O in the English community dictionary. Each entry has its own page with its full meaning and example sentence. This data is openly available at no cost for language preservation and research, with attribution to LanguageKnow. You can return to the home page or browse all languages at any time.

English (GB)

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11 words and 5 phrases — 16 entries in total.

Words (11)

O (11)

Observe (English) verb AI-checked — awaiting native speaker review

To watch something or someone carefully

Obsolete (English) adjective AI-checked — awaiting native speaker review

Obsolete

Obstacle (English) noun AI-checked — awaiting native speaker review

A thing that blocks one's way or prevents or hinders progress.

ocean (English) AI-generated — awaiting native speaker review

a vast body of salt water that covers almost three quarters of the earth's surface

one (English) AI-generated — awaiting native speaker review

uno

optimistic (English) AI-generated — awaiting native speaker review

optimista

Orchard (English) noun AI-checked — awaiting native speaker review

Orchard

Orchestra (English) noun AI-checked — awaiting native speaker review

A large group of musicians who play many different instruments together

Orchid (English) noun AI-checked — awaiting native speaker review

A plant with complex and colorful flowers

Organize (English) verb AI-checked — awaiting native speaker review

To arrange into a structured whole or order

Overcoat (English) noun AI-checked — awaiting native speaker review

a long, warm coat worn over ordinary clothing during cold weather

Phrases (5)

On cloud nine (English) AI-generated — awaiting native speaker review

Extremely happy or joyful.

On the same page. (English) AI-checked — awaiting native speaker review

On the same page.

Once in a blue moon (English) AI-checked — awaiting native speaker review

Happening very rarely

Once upon a time (English) AI-generated — awaiting native speaker review

Había una vez

Out of the blue (English) AI-checked — awaiting native speaker review

Completely unexpected

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