That's it vs That's the word for it

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

That's it

Top 1,000 (very common)

That's the word for it

Top 5,000 (fairly common)

Most common: That's it

	That's it	That's the word for it
Pronunciation	🇬🇧 //ðæts ɪt// 🇺🇸 //ðæts ɪt//	🇬🇧 //ðæts ðə wɜːd fə ɪt// 🇺🇸 //ðæts ðə wɜrd fər ɪt//
Meaning	That's all; nothing more.	That's the right way to describe something.
Example	After hours of work, I finally finished it. That's it!	I couldn't remember what it was called, but then she said 'serendipity' and I thought, that's the word for it!
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 5,000 (fairly common)
Collocations	that's it for now, that's it then, that's it folks	find the word for it, search for the word for it, use the word for it
Antonyms	not yet, incomplete, ongoing	That's not the word for it, That's not the right word, That's an incorrect expression
Common mistakes	Used in formal contexts where a more professional tone is needed., Mispronounced or emphasized incorrectly, making it unclear., Confused with other phrases like 'that's it for now'.	Using it in overly formal contexts., Confusing it with similar phrases like 'that's the phrase for it.'
Usage notes	Commonly used to conclude a statement or to indicate finality. It's informal but acceptable in most casual contexts.	Used when someone provides a description that exactly fits what you're thinking. Appropriate in conversations, but might be too informal in written reports or academic papers.

See it in real clips

Chernobyl › S1 E1

That's it, that's the worst of it.

That's it.

Agatha Christies Poirot › S1 E1

So, that's it, is it?

Chernobyl › S1 E1

That's it, that's the worst of it.

That's it.

That's it

Breaking Bad › S1 E1

Sage. That's the word for it.

That's the word for it

Frequently asked questions: That's it vs That's the word for it

What's the difference between That's it and That's the word for it?

That's it: That's all; nothing more. That's the word for it: That's the right way to describe something.

Which is more common: That's it and That's the word for it?

That's it is the most common in everyday English.

Can you show an example of each?

That's it: After hours of work, I finally finished it. That's it! That's the word for it: I couldn't remember what it was called, but then she said 'serendipity' and I thought, that's the word for it!

Can I use That's it and That's the word for it interchangeably?

Not always. That's it and That's the word for 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.