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

be fucking sure

Grammar usage guide and real-world examples

USAGE SUMMARY

The use of "be fucking sure" in written English is generally considered to be inappropriate, slang, and impolite.
It should be avoided in formal writing and reserved for informal, spoken conversation. For example, you might say to your friends, "Be fucking sure you don't miss the party this weekend!".

⚠ May contain grammatical issues

News & Media

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

I think Adrian Chen is a brilliant dude but be fucking sure I didn't read his Reddit story, and never will.

News & Media

Vice

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

All I know is if I was Gilligan and it was my island I'd sure as shit be fucking that Ginger.

News & Media

The New Yorker

It's not done, that's for fucking sure, no matter what the press release implies.

News & Media

Vice

Fucking is fucking.

News & Media

The New Yorker

Man, your tax dollars don't buy good photocopies, that's for fucking sure.

News & Media

Vice

And I'm pretty fucking sure that we can use that stuff in much more interesting ways than our governments we can use it in art, for example, or as stages at music festivals.

News & Media

Vice

One thing is for sure, this is fucking bad taste party planning.

News & Media

Vice

Make sure you're fucking down!' A bullet went straight through my chandelier and shattered it".

News & Media

Vice

I kept yelling 'get down! make sure you're fucking down!' A bullet went straight through my chandelier and shattered it".

News & Media

Vice

- Wasabi Balls Hey Wasabi Balls, Even though I am, almost, one million percent sure you are fucking with me here, I'm going to answer this question seriously on the off chance that wasabi balls is, perhaps, trendy right now.

News & Media

Vice

I had to make sure no one was fucking, basically.

Show more...

Expert writing Tips

Best practice

In professional or formal contexts, avoid using "be fucking sure" due to its offensive and inappropriate nature. Opt for alternatives like "be absolutely certain" or "ensure".

Common error

Do not use "be fucking sure" in formal writing or professional communication. Its strong and vulgar tone undermines credibility and is generally considered offensive.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

83%

Authority and reliability

2.1/5

Expert rating

Real-world application tested

Linguistic Context

Emphatic directive. The phrase "be fucking sure" functions as an imperative, strongly urging someone to ensure something. The word "fucking" acts as an intensifier, though its use is generally considered inappropriate. As Ludwig AI points out, the phrase should be avoided in formal writing.

Expression frequency: Uncommon

Frequent in

News & Media

100%

Less common in

Science

0%

Formal & Business

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "be fucking sure" is a phrase used for emphatic direction, urging someone to ensure something, with "fucking" adding intensity. Ludwig AI marks it as generally inappropriate. Its grammatical status is questionable, and it's best reserved for very informal contexts, as its vulgarity is unsuitable for professional or formal settings. More appropriate alternatives include "be absolutely certain", "make certain", or "ensure". Ludwig's analysis reveals that while the phrase appears in some news and media sources, its usage should be approached with caution due to its offensive nature.

FAQs

How can I use "be fucking sure" in a sentence?

While grammatically questionable and generally inappropriate for formal settings, "be fucking sure" can be used in very informal conversations to emphasize a point or express strong determination. However, consider using alternative phrases.

What can I say instead of "be fucking sure"?

You can use alternatives like "be absolutely certain", "make certain", or "ensure" depending on the context.

Which is correct, "be fucking sure" or "be absolutely sure"?

"Be absolutely sure" is grammatically correct and suitable for most situations. "Be fucking sure" is grammatically questionable, considered vulgar, and inappropriate for formal contexts.

What's the difference between "be fucking sure" and "make sure"?

"Make sure" is a standard, polite way to express the need to ensure something. "Be fucking sure" is a vulgar and emphatic way of saying the same thing, suitable only for very informal situations and potentially offensive.

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

83%

Authority and reliability

2.1/5

Expert rating

Real-world application tested

Most frequent sentences: