Obviously vs Of course you idiot

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

Obviously

Top 1,000 (very common) B1 adverb

Of course you idiot

Informal Beyond 10,000 (less common)

Most formal: Obviously Most common: Obviously

	Obviously	Of course you idiot
Pronunciation	🇬🇧 /["/ˈɒbviəsli/"]/ 🇺🇸 /["/ˈɑːbviəsli/"]/	🇬🇧 //əv kɔːs juː ˈɪdiət// 🇺🇸 //əv kɔːrs ju ˈɪdiət//
Meaning	Clearly or easily seen.	A way to say someone is foolish or silly.
Example	Obviously, we don't want to spend too much money.	Of course you idiot, everyone knows that the sun rises in the east!
Register	Neutral	Informal
How common	Top 1,000 (very common)	Beyond 10,000 (less common)
CEFR level	B1	-
Part of speech	adverb
Collocations	obviously correct, obviously wrong, obviously happy, obviously important, obviously true	Of course not, Of course yes, As if you didn't know
Antonyms	unclearly, 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 it in a formal context., Not using it with close friends who will find it funny., Mispronouncing 'idiot' as 'idiot' instead of 'idi-yət'.
Usage notes	Use 'obviously' when something is clear or evident. It's appropriate in most contexts but can seem sarcastic if overused.	Use this expression informally among friends. It's rude if used with strangers or in serious situations.

See it in real clips

Succession › S1 E1

Great, 'cause obviously I'm soft-floating to like, Frank and Rava,

Breaking Bad › S1 E7

But you are alive. Obviously you wised up.

Sherlock › S1 E1

Well, obviously I can straighten things up a bit.

Succession › S1 E1

Great, 'cause obviously I'm soft-floating to like, Frank and Rava,

Breaking Bad › S1 E7

But you are alive. Obviously you wised up.

Obviously

How I Met Your Mother › S1 E1

Of course, you idiot!

Of course you idiot

Frequently asked questions: Obviously vs Of course you idiot

What's the difference between Obviously and Of course you idiot?

Obviously: Clearly or easily seen. Of course you idiot: A way to say someone is foolish or silly.

Which is more formal: Obviously and Of course you idiot?

Obviously is the most formal of these.

Which is more common: Obviously and Of course you idiot?

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 you idiot: Of course you idiot, everyone knows that the sun rises in the east!

Can I use Obviously and Of course you idiot interchangeably?

Not always. Obviously and Of course you idiot 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.