11 Adverbs That Start With "O"
11 curated adverbs that start with "O".
Below are 11 adverbs that start with "O" in our curated English dictionary. Each entry includes a learner-friendly definition, IPA pronunciation, CEFR difficulty level, and example sentences. Words are sorted by frequency — the most common first. Click any word to view its full dictionary entry with synonyms, collocations, and common mistakes.
Most Common Adverbs That Start With "O" (Top 1k)
Less Common Adverbs That Start With "O" (Top 5k+)
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Obviously /ˈɒbviəsli/adv A2
In a way that is very clear or easy to understand.
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Often /ˈɔːfən/adv A1
Happening or done many times, not rarely.
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Once /wʌns/adv A1
A single time before; it happened one time in the past.
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Overall /ˌoʊvərˈɔl/adv B1
When you consider all the parts together or think about something as a complete picture.
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Originally /əˈrɪdʒənəli/adv B1
At the start or beginning; before any changes.
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Ostensibly /ɒˈstɛnsɪbli/adv C1
According to what seems true, though it might not actually be.
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Otherwise /ˈʌðərwaɪz/adv A2
In a different way, or showing what happens if you don't do something.
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Overseas /ˌoʊvərˈsiz/adv B2
In another country that is across the ocean. Going abroad or living in a foreign country far away.
How to Use Adverbs That Start With "O"
Adverbs that start with "O" answer questions like "how?", "when?", "where?", or "to what extent?". Place adverbs of frequency (always, often, sometimes) before the main verb but after "be"; place adverbs of manner (carefully, quickly) usually after the verb or object. Many of the adverbs on this page were formed by adding "-ly" to an adjective — note this connection when learning new vocabulary.
Longest Adverb That Start With "O"
At the start or beginning; before any changes.
Frequently Asked Questions About Adverbs That Start With "O"
- How many adverbs that start with "O"?
- Our curated dictionary lists 11 adverbs that start with "O", each with a definition, IPA, CEFR level, and example sentences. The list grows as new entries are reviewed.
- What are the most common adverbs that start with "O"?
- Some of the most frequent adverbs that start with "O" include OFF, ONLY, OUT. These appear in everyday English and are useful for both beginners (A1-A2) and intermediate learners.
- What is adverb?
- An adverb is a word that modifies a verb, an adjective, or another adverb — describing how, when, where, or to what degree something happens. Many English adverbs end in "-ly".
- What is the longest adverb that start with "O"?
- The longest adverb that start with "O" in our dictionary is "ORIGINALLY" (10 letters). Tap the word to see its full entry.