Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

which is hard

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "which is hard" is correct and usable in written English.
It can be used to describe something that is difficult or challenging in various contexts. Example: "Learning a new language, which is hard, requires dedication and practice."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Which is hard.

Which is hard to spot.

News & Media

The Guardian

Which is hard to argue with.

News & Media

The Guardian

We had this connection which is hard to describe.

News & Media

The New York Times

Proprietary research is predicting the future, which is hard.

News & Media

The New York Times

Which is hard, when you don't understand the problem.

News & Media

The Guardian

It requires an accurate inflation forecast, which is hard enough in normal times.

News & Media

The Economist

This would favor a stable mosaic of wing patterns, each of which is hard to displace.

Which is hard, because I'm sure you want to give your children everything".

News & Media

Independent

You're thinking about what landed you in this wretched place, which is hard to dramatize.

News & Media

The New York Times

Which is hard work, but sometimes even a tiny group can do it.

Show more...

Expert writing Tips

Best practice

When using "which is hard", ensure the "which" clause clearly refers to the preceding noun or situation to avoid ambiguity. For example, "Solving this problem, which is hard, requires a dedicated approach."

Common error

Avoid using "that" instead of "which" in non-restrictive clauses where "which is hard" provides additional, non-essential information. "That" is generally used for restrictive clauses that are essential to the meaning of the sentence.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "which is hard" functions as a non-restrictive relative clause, providing additional information about a preceding noun or situation. As Ludwig AI shows, it often adds a comment on the difficulty associated with the subject.

Expression frequency: Very common

Frequent in

News & Media

54%

Science

33%

Formal & Business

7%

Less common in

Wiki

3%

Academia

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "which is hard" is a very common and grammatically sound phrase used to express the difficulty of something. Ludwig AI confirms its frequent use in news and media, but also its presence in scientific and formal business writing, lending it a neutral register. When using the phrase, remember to ensure the "which" clause clearly refers to the preceding noun to avoid ambiguity. Alternatives such as "that is difficult" or "that is challenging" can be used for variety, although they may subtly shift the emphasis.

FAQs

How can I use "which is hard" in a sentence?

Use "which is hard" to add a comment about the difficulty of something previously mentioned. For example: "Learning a new language, which is hard, takes time and dedication."

What can I say instead of "which is hard"?

You can use alternatives like "that is difficult", "that is challenging", or "it is not easy" depending on the context.

Is it correct to say "that is hard" instead of "which is hard"?

While both can be grammatically correct, "which is hard" is typically used in non-restrictive clauses to add extra information. "That is hard" is more common in restrictive clauses essential to the sentence's meaning. Rephrasing is also an option.

What's the difference between "which is hard" and "this is hard"?

"Which is hard" refers back to a specific thing or action mentioned earlier in the sentence, whereas "this is hard" is a statement about something immediately present or being experienced.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: