I know by

USAGE SUMMARY

The phrase "I know by" is correct and usable in written English.
It can be used when indicating the source or method through which you have acquired knowledge or information. Example: "I know by experience that hard work pays off in the long run."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

55 human-written examples

There are passages I know by heart.

The New Yorker

"Mr. Brooks I know by name".

The New York Times

"I know by their mannerisms.

The Guardian

I know by now we're at 3,000 feet.

The New York Times - Travel

"When you use the sugary gourmand product, I know by experience that you please easily," Mr. Ellena said.

The New York Times

"I know by name seven of my relatives who were killed just in the last two days," he said.

The New York Times

I'm cheating a little, I know, by just wearing basic black.

The New York Times - Travel

"For new guests, I trust the recipe I know by heart," begins the hostess in a voice-over.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

3 human-written examples

I knew by the time I got home.

The New York Times

Because I knew by then it wasn't exactly Fleisig.

The New Yorker

(They were Americans, as I knew by their Bermuda shorts).

The New York Times - Books

Expert writing Tips

Best practice

When using "I know by", ensure you clearly state the source or method by which you gained the knowledge. This adds credibility and clarity to your statement.

Common error

Avoid using "I know by" without specifying how you know. For example, instead of saying "I know by the way things are", specify "I know by the look in his eyes" or "I know by experience".

Linguistic Context

The phrase "I know by" functions as a declarative expression used to indicate the basis or method through which an individual has gained knowledge or understanding. Ludwig AI indicates that this phrase is grammatically correct and widely used.

Expression frequency: Very common

Frequent in

News & Media

50%

Science

30%

Formal & Business

10%

Less common in

Encyclopedias

5%

Wiki

3%

Reference

2%

Ludwig's WRAP-UP

In summary, "I know by" is a grammatically sound and frequently used phrase to express the source or method of one's knowledge. As Ludwig AI confirms, it's a clear and effective way to provide context. The phrase enjoys broad applicability across various contexts, ranging from news and media to scientific discourse. When using this phrase, remember to explicitly state your source of knowledge for clarity and credibility. Consider alternative phrasing if a slightly different emphasis is desired, for example "I understand through" or "I am aware via".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I determine by

Focuses on the method used to establish something.

I recognize from

Implies knowing something through identifying familiar characteristics.

I understand through

Highlights comprehension as the way of knowing.

I am aware via

Highlights the medium through which information is received.

I gather from

Suggests collecting information from various sources.

I deduce from

Highlights logical reasoning as the basis for knowledge.

I infer based on

Focuses on drawing a conclusion from evidence.

I ascertain through

Emphasizes a process of discovering something with certainty.

Based on what I've seen

Highlights visual observation as the basis for knowledge.

According to my experience

Frames knowledge as derived from personal experience.

FAQs

How can I use "I know by" in a sentence?

Use "I know by" to indicate the basis of your knowledge or understanding. For example, "I know by her expression that she's upset" or "I know by the manual that this is the correct procedure."

What phrases are similar to "I know by"?

You can use phrases like "I understand through", "I am aware via", or "I recognize from" to convey a similar meaning.

Is "I know by" formal or informal?

"I know by" is generally considered neutral and can be used in both formal and informal contexts, depending on the surrounding language and the specific source of knowledge being referenced.

What's the difference between "I know by" and "I know because"?

"I know by" emphasizes the method or source through which you gained knowledge (e.g., "I know by experience"), while "I know because" emphasizes the reason or cause for your knowledge (e.g., "I know because she told me").