Obviously vs Of course I read it

When to use each in English, with meaning, register, and examples.

Obviously

Top 1,000 (very common)B1adverb

Of course I read it

Top 5,000 (fairly common)
Most common: Obviously
 ObviouslyOf course I read it
Pronunciation🇬🇧 /["/ˈɒbviəsli/"]/🇺🇸 /["/ˈɑːbviəsli/"]/🇬🇧 //əv kɔːs aɪ rɛd ɪt//🇺🇸 //əv kɔrs aɪ rɛd ɪt//
MeaningClearly or easily seen.It's natural for me to have read it.
ExampleObviously, we don't want to spend too much money.Of course I read it; it was really interesting!
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 5,000 (fairly common)
CEFR levelB1-
Part of speechadverb
Collocationsobviously correct, obviously wrong, obviously happy, obviously important, obviously trueOf course I agree, Of course I know, Of course you can
Antonymsunclearly, ambiguously-
Common mistakes'Obvious' vs 'obviously': Confusing the adjective and adverb forms., Using in overly formal situations: It's too casual for very formal writing., Placing it too far from what it's describing: Should be close to the idea it clarifies.Using 'of course' in contexts where it's not obvious, making it sound condescending., Misplacing the phrase in sentences, losing its intended emphasis., Translating directly from another language, which may sound awkward.
Usage notesUse 'obviously' when something is clear or evident. It's appropriate in most contexts but can seem sarcastic if overused.Use this phrase to express a natural understanding or expectation. It's typically informal but can be slightly formal in certain contexts.

See it in real clips

Obviously
Of course I read it

Frequently asked questions: Obviously vs Of course I read it

What's the difference between Obviously and Of course I read it?

Obviously: Clearly or easily seen. Of course I read it: It's natural for me to have read it.

Which is more common: Obviously and Of course I read it?

Obviously is the most common in everyday English.

Can you show an example of each?

Obviously: Obviously, we don't want to spend too much money. Of course I read it: Of course I read it; it was really interesting!

Can I use Obviously and Of course I read it interchangeably?

Not always. Obviously and Of course I read it are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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