I know them all

USAGE SUMMARY

The phrase "I know them all" is correct and usable in written English.
You can use it when expressing familiarity or knowledge about a group of people or things. Example: "When it comes to the famous authors of the 20th century, I know them all."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

31 human-written examples

I know them all right.

Forbes

I know them all.

The Washington Post

But I know them all pretty much".

The New York Times

And I know them all.

The Washington Post

But I know them all, every one.

The New Yorker

And, of course, I know them all.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

29 human-written examples

Sammy Davis Jr, Dean Martin and Elvis – I knew them all.

The Guardian - Lifestyle

"All six of the operators killed in the past few years, I knew them all.

Independent

I knew them all".

The New York Times - Arts

"I knew them all pretty well".

The New Yorker

"I knew them all," he wrote.

The Washington Post

Expert writing Tips

Best practice

When using the phrase, consider the level of formality required by the context. While generally acceptable in most situations, more formal settings may benefit from a slightly more elaborate expression.

Common error

Avoid using "I know them all" without a clear antecedent for "them". Ensure your audience understands who or what you are referring to, to prevent confusion.

Linguistic Context

The phrase "I know them all" functions as a declarative statement expressing the speaker's comprehensive knowledge or familiarity with a specific group or set of individuals/items. This is supported by Ludwig AI, which confirms the phrase's correctness.

Expression frequency: Common

Frequent in

News & Media

88%

Science

7%

Formal & Business

5%

Less common in

Academia

0%

Wiki

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "I know them all" is a grammatically sound and commonly used expression to convey comprehensive knowledge or familiarity. Ludwig AI validates its correctness, and it finds frequent usage in News & Media, but also in Science and Formal & Business. To ensure clarity, always provide context for "them". While versatile, consider formality levels when using this phrase, especially in academic or highly professional settings. For related expressions, you can consider using "I am familiar with all of them" or "I am acquainted with all of them". Remember to check the context before you use this phrase.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I'm acquainted with all of them

Replaces "know" with "acquainted", implying a degree of familiarity.

I'm familiar with all of them

Uses "familiar" instead of "know", suggesting awareness and understanding.

I recognize all of them

Focuses on the ability to identify or remember individuals or items.

I'm aware of all of them

Emphasizes consciousness or knowledge about their existence or nature.

I've met them all

Indicates personal interaction or acquaintance with each member of a group.

I'm versed in all of them

Implies a thorough and comprehensive knowledge of a subject or topic.

I'm well-versed in all of them

Highlights extensive knowledge or expertise in a particular area.

I understand all of them

Stresses comprehension and insight into their nature or purpose.

I'm conversant with all of them

Denotes a level of knowledge that allows for informed discussion.

I've studied them all

Indicates formal or informal learning and acquisition of knowledge.

FAQs

How can I rephrase "I know them all" to sound more formal?

For a more formal tone, consider using phrases like "I am acquainted with all of them", "I am familiar with all of them", or "I possess comprehensive knowledge of all of them".

What is the difference between "I know them all" and "I knew them all"?

"I know them all" implies present knowledge or familiarity, while "I knew them all" indicates past knowledge or familiarity.

Is "I know them all" appropriate for academic writing?

While grammatically correct, "I know them all" might be considered too informal for academic writing. Consider using more formal alternatives like "I am familiar with all of them" or "I possess knowledge of all of them" depending on the context.

Can I use "I know them all" when referring to concepts or ideas?

Yes, "I know them all" can be used when referring to concepts or ideas, not just people. For example, "When it comes to the principles of quantum physics, I know them all".