Indeed vs That's so right on

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

Indeed

Top 1,000 (very common) B1 adverb

That's so right on

Informal Top 5,000 (fairly common)

Most formal: Indeed Most common: Indeed

	Indeed	That's so right on
Pronunciation	🇬🇧 /["/ɪnˈdiːd/"]/ 🇺🇸 /["/ɪnˈdiːd/"]/	🇬🇧 //ðæts səʊ raɪt ɒn// 🇺🇸 //ðæts soʊ raɪt ɑn//
Meaning	Yes, really; for sure.	That is exactly correct or true.
Example	Indeed, the project is going much better than we expected.	When she said we should travel more, I thought, 'That's so right on.'
Register	Neutral	Informal
How common	Top 1,000 (very common)	Top 5,000 (fairly common)
CEFR level	B1	-
Part of speech	adverb
Collocations	indeed true, indeed a fact, as you said, indeed	that's so right on point, that's so right on target, that's so right on the money
Antonyms	disregarding, neglecting	-
Common mistakes	Using 'indeed' in extremely casual texts, where 'yes' would be more appropriate., Confusing 'indeed' with 'instead' — they have different meanings., Placing 'indeed' too far from what it modifies, making it unclear.	Using in formal contexts where more reserved language is needed., Confusing with 'right on' as a command., Overusing it in conversations, making it sound insincere.
Usage notes	Used to confirm something previously mentioned. Normal in both spoken and written English, but less common in very casual conversations.	Usually used in casual conversations to express agreement. Avoid in formal settings or written communication.

See it in real clips

Sherlock › S1 E1

Very nice indeed.

Agatha Christies Poirot › S1 E1

Indeed?

Band Of Brothers › S1 E1

Indeed it has, sir.

Sherlock › S1 E1

Very nice indeed.

Agatha Christies Poirot › S1 E1

Indeed?

Indeed

That's so right on, man. You said it all.

That's so right on

Frequently asked questions: Indeed vs That's so right on

What's the difference between Indeed and That's so right on?

Indeed: Yes, really; for sure. That's so right on: That is exactly correct or true.

Which is more formal: Indeed and That's so right on?

Indeed is the most formal of these.

Which is more common: Indeed and That's so right on?

Indeed is the most common in everyday English.

Can you show an example of each?

Indeed: Indeed, the project is going much better than we expected. That's so right on: When she said we should travel more, I thought, 'That's so right on.'

Can I use Indeed and That's so right on interchangeably?

Not always. Indeed and That's so right on 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.